MESON Chess Problem Database
Problem Display
PID: 102987 (3K4/B1N2N2/p2p2b1/R1qP4/2pkpP2/8/1PPbPPQ1/8 w - - 0 1)
Buchmann, Gustav
1st Prize, Source?, 1924
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.Bxb6#
- 1...Qxa7
- 2.Se6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bxf4
- 2.c3#
- 1...Bxa5
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bxf7
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...e3
- 2.Se6#
- 1...Qb6
- Tries
- 1.Ke7?
- 1...Bxf4
- 2.c3#
- 1...Bxa5
- 2.e3#
- 1...Bxf7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Se6#
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3
- 2.Se6#
- 1...Qxa7!
- 1...Bxf4
- 1.Ke8?
- 1...Qxa7
- 2.Se6#
- 1...Bxf4
- 2.c3#
- 1...Bxa5
- 2.e3#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Se6#
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3
- 2.Se6#
- 1...Bxf7+!
- 1...Qxa7
- 1.Se5?
- threat
- 2.Sc6#
- 1...dxe5
- 2.Bxc5#
- 1...c3
- 2.Ra4#
- 1...Be8!
- threat
- 1.Sxd6?
- threat
- 2.Bxc5#
- 1...Qxa7
- 2.Se6#
- 1...Bxa5
- 2.e3#
- 1...Qb6
- 2.Bxb6#
- 1...Bb4
- 2.e3#
- 1...Bxf4!
- threat
- 1.Sh6?
- 1...Qxa7
- 2.Se6#
- 1...Bxa5
- 2.e3#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Sxf5#
- 2.Qg7#
- 1...Bh5
- 2.Sf5#
- 2.Qg7#
- 1...Bf7
- 2.Sf5#
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...Be8
- 2.Sf5#
- 2.Qg7#
- 1...e3
- 2.Se6#
- 1...Bxf4!
- 1...Qxa7
- 1.Sh8?
- 1...Qxa7
- 2.Se6#
- 1...Bxa5
- 2.e3#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bf7
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...Be8
- 2.Qg7#
- 1...e3
- 2.Se6#
- 1...Bxf4!
- 1...Qxa7
- 1.Bb6?
- 1...Bxf4
- 2.c3#
- 1...Bxa5
- 2.e3#
- 1...Bxf7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3
- 2.Se6#
- 1...Qxb6!
- 1...Bxf4
- 1.Rxc5?
- threat
- 2.Se6#
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 1...Bxf7
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 2.Qg7#
- 1...a5
- 2.Sb5#
- 2.Se6#
- 2.Rxa5#
- 2.Rb5#
- 2.Rc6#
- 1...Bb4
- 2.Se6#
- 2.e3#
- 1...Ba5
- 2.Rxa5#
- 2.e3#
- 1...Bf5
- 2.Ra5#
- 2.Rb5#
- 2.Rc6#
- 2.Qg7#
- 1...c3
- 2.Se6#
- 2.Rxc3#
- 2.Rc6#
- 1...dxc5!
- threat
- 1.Rxa6?
- 1...Bxf4
- 2.c3#
- 1...Bxf7
- 2.Qg7#
- 1...Qb6
- 2.Bxb6#
- 1...c3
- 2.Ra4#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Ba5
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3
- 2.Sb5#
- 2.Se6#
- 1...Qxa7!
- 1...Bxf4
- 1.Qg1?
- 1...Qxa7
- 2.Se6#
- 1...Bxf4
- 2.c3#
- 1...Bxa5
- 2.e3#
- 1...Bxf7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 2.fxe3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3!
- 1...Qxa7
- 1.Qg3?
- 1...Qxa7
- 2.Se6#
- 1...Bxf4
- 2.Qc3#
- 2.c3#
- 1...Bxa5
- 2.Qe3#
- 2.e3#
- 1...Bxf7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Bxb6#
- 1...Bc1
- 2.Qc3#
- 2.c3#
- 1...Be1
- 2.Qe3#
- 2.e3#
- 1...Bc3
- 2.Qxc3#
- 2.Qe3#
- 2.bxc3#
- 2.e3#
- 1...Be3
- 2.Qxe3#
- 2.c3#
- 2.fxe3#
- 1...Bb4
- 2.Qe3#
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3!
- 1...Qxa7
- 1.Qg5?
- threat
- 2.Se6#
- 2.Qf6#
- 1...Bxf4
- 2.Se6#
- 2.c3#
- 1...Bxa5
- 2.Qf6#
- 2.e3#
- 1...Bxf7
- 2.Qf6#
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Bxb6#
- 2.Qf6#
- 1...Bf5
- 2.Qf6#
- 2.Qg7#
- 1...e3!
- threat
- 1.Qxg6?
- threat
- 2.Qf6#
- 2.Qg7#
- 1...Bxf4
- 2.c3#
- 1...c3
- 2.Ra4#
- 1...e3!
- threat
- 1.f5?
- 1...Qxa7
- 2.Se6#
- 1...Bxa5
- 2.e3#
- 1...Bxf5
- 2.Qg7#
- 1...Bxf7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...Qb6
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf4
- 2.c3#
- 1...Bh6
- 2.c3#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...e3
- 2.Se6#
- 2.Qg4#
- 1...Bg5+!
- 1...Qxa7
- 1.Ke7?
- Keys
- 1.Qg4!
- 1...Qxa7
- 2.Se6#
- 1...Bxf4
- 2.c3#
- 1...Bxa5
- 2.e3#
- 1...Bxf7
- 2.Qg7#
- 1...c3
- 2.Ra4#
- 1...e3
- 2.f5#
- 1...Qb6
- 2.Bxb6#
- 1...Bc1
- 2.c3#
- 1...Be1
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Be3
- 2.c3#
- 1...Bb4
- 2.e3#
- 1...Bf5
- 2.Qg7#
- 1...Bh5
- 2.Qg7#
- 1...Bh7
- 2.Qg7#
- 1...Qxa7
- 1.Qg4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(a);N_GUARD,XP(F)::P(B)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- B(h);OGATE::QAB(E)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- P(d);::S(J)
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- B(a);N_GUARD,XP(F)::P(B)
- B(a);N_GUARD,XR(G)::P(C)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
- P(d);::S(J)
- Refutation
- Q(e);N_SPINQ(e),P_PINS(J),XB(I)
- Try
- K(L);P-FLIGHT,P_SPINS(K)
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,XP(F)::P(B)
- B(a);N_GUARD,XR(G)::P(C)
- P(b);OGATEB::R(G)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);N_PINS(K),OGATE::QAB(E)
- B(h);OGATE::QAB(E)
- P(d);::S(J)
- Refutation
- B(h);CHECK,XS(K)
- Try
- S(K);
- Threat
- S(K)
- Vars
- P(g);N_GUARD,XS(K)::B(I),XQ(e)
- P(b);OGATEB::R(G)
- Refutation
- B(h);
- Try
- S(K);XP(g)
- Threat
- B(I),XQ(e)
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(a);N_GUARD::P(C)
- Refutation
- B(a);XP(F)
- Try
- S(K);
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- P(b);OGATEB::R(G)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
- P(d);::S(J)
- Refutation
- B(a);XP(F)
- Try
- S(K);
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- P(b);OGATEB::R(G)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
- P(d);::S(J)
- Refutation
- B(a);XP(F)
- Try
- B(I);
- Vars
- B(a);N_GUARD,XP(F)::P(B)
- B(a);N_GUARD,XR(G)::P(C)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
- P(d);::S(J)
- Refutation
- Q(e);N_SPINQ(e),P_PINS(J),XB(I)
- Try
- R(G);XQ(e)
- Threat
- DUALS(4)
- Refutation
- P(g);P_SPINP(g),XR(G)
- Try
- R(G);XP(f)
- Vars
- B(a);N_GUARD,XP(F)::P(B)
- B(h);OGATE,XS(K)::QAB(E)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- P(b);OGATEB::R(G)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(a);N_GUARD,P_PINS(J)::P(C)
- B(h);OGATE::QAB(E)
- Refutation
- Q(e);N_SPINQ(e),XB(I)
- Try
- Q(E);
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,XP(F)::P(B)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
- Refutation
- P(d);
- Try
- Q(E);
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(h);OGATE::QAB(E)
- Refutation
- P(d);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(b);OGATEB::R(G)
- Refutation
- P(d);
- Try
- Q(E);XB(h)
- Threat
- DUALS(2)
- Vars
- B(a);N_GUARD,XP(F)::P(B)
- P(b);OGATEB::R(G)
- Refutation
- P(d);
- Try
- P(F);
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- B(h);OGATE,XP(F)::QAB(E)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
- Refutation
- B(a);CHECK
- Try
- Actual
- Q(E);
- Vars
- Q(e);N_SPINQ(e),XB(I)::S(J)
- B(a);N_GUARD,XP(F)::P(B)
- B(a);N_GUARD,P_PINS(J),XR(G)::P(C)
- B(h);OGATE,XS(K)::QAB(E)
- P(b);OGATEB::R(G)
- P(d);::QAR(E)+P(F)
- Q(e);OGATEB,P_PINS(J)::B(I),XQ(e)
- B(a);N_GUARD::P(B)
- B(a);N_GUARD::P(C)
- B(h);OGATE::QAB(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).