MESON Chess Problem Database
Problem Display
PID: 203539 (3n4/4N3/5B1p/1p1pp1NP/1R1bqk1P/4Rp1P/3P1K1p/3Q3B w - - 0 1)
Buchmann, Gustav
Essener Arbeiter Schachzeitung, 1924
#2
12 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Bxe5#
- 2.Qxf3#
- 1...Qc2
- 2.Bxe5#
- 2.Qxf3#
- 1...Qd3
- 2.Bxe5#
- 2.Qxf3#
- 1...Qf5
- 2.Sxd5#
- 2.Qxf3#
- 1...Qg6
- 2.Bxe5#
- 2.Qxf3#
- 1...Qh7
- 2.Bxe5#
- 2.Qxf3#
- 1...Qxe3+
- 2.dxe3#
- 1...Ba1
- 2.Rxf3#
- 2.Qxf3#
- 1...Bb2
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc3
- 2.Rxf3#
- 2.Qxf3#
- 1...Bxe3+
- 2.dxe3#
- 1...Bc5
- 2.Qxf3#
- 1...Bb6
- 2.Qxf3#
- 1...Ba7
- 2.Qxf3#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...hxg5
- 2.Bxg5#
- 1...Qb1
- Tries
- 1.Sxe4?
- threat
- 2.Qxf3#
- 1...Bxe3+
- 2.dxe3#
- 1...dxe4!
- threat
- 1.Sg6+?
- 1...Qxg6
- 2.Qxf3#
- 1...Kf5!
- 1...Qxg6
- 1.Bxe5+?
- 1...Qxe5
- 2.Qxf3#
- 1...Bxe5
- 2.Rxf3#
- 2.Qxf3#
- 1...Kxe5!
- 1...Qxe5
- 1.Bg7?
- 1...Qxe3+
- 2.dxe3#
- 1...Bxe3+
- 2.dxe3#
- 1...Qb1
- 2.Bxe5#
- 2.Qxf3#
- 1...Qc2
- 2.Bxe5#
- 2.Qxf3#
- 1...Qd3
- 2.Bxe5#
- 2.Qxf3#
- 1...Qf5
- 2.Sxd5#
- 2.Qxf3#
- 1...Qg6
- 2.Bxe5#
- 2.Qxf3#
- 1...Qh7
- 2.Bxe5#
- 2.Qxf3#
- 1...Ba1
- 2.Rxf3#
- 2.Qxf3#
- 1...Bb2
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc3
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc5
- 2.Qxf3#
- 1...Bb6
- 2.Qxf3#
- 1...Ba7
- 2.Qxf3#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...hxg5!
- 1...Qxe3+
- 1.Bh8?
- 1...Qxe3+
- 2.dxe3#
- 1...Bxe3+
- 2.dxe3#
- 1...Qb1
- 2.Bxe5#
- 2.Qxf3#
- 1...Qc2
- 2.Bxe5#
- 2.Qxf3#
- 1...Qd3
- 2.Bxe5#
- 2.Qxf3#
- 1...Qf5
- 2.Sxd5#
- 2.Qxf3#
- 1...Qg6
- 2.Bxe5#
- 2.Qxf3#
- 1...Qh7
- 2.Bxe5#
- 2.Qxf3#
- 1...Ba1
- 2.Rxf3#
- 2.Qxf3#
- 1...Bb2
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc3
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc5
- 2.Qxf3#
- 1...Bb6
- 2.Qxf3#
- 1...Ba7
- 2.Qxf3#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...hxg5!
- 1...Qxe3+
- 1.Rxd4?
- threat
- 2.Rxf3#
- 2.Qxf3#
- 1...Qxd4
- 2.Qxf3#
- 1...exd4!
- threat
- 1.Qe2?
- 1...Qxe3+
- 2.Qxe3#
- 2.dxe3#
- 1...Bxe3+
- 2.Qxe3#
- 2.dxe3#
- 1...hxg5
- 2.Bxg5#
- 1...Qb1
- 2.Bxe5#
- 2.Qxf3#
- 1...Qc2
- 2.Bxe5#
- 2.Qxf3#
- 1...Qd3
- 2.Bxe5#
- 2.Qxf3#
- 1...Qf5
- 2.Sxd5#
- 2.Qxf3#
- 1...Qg6
- 2.Bxe5#
- 2.Qxf3#
- 1...Qh7
- 2.Bxe5#
- 2.Qxf3#
- 1...Ba1
- 2.Rxf3#
- 2.Qxf3#
- 1...Bb2
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc3
- 2.Rxf3#
- 2.Qxf3#
- 1...Bc5
- 2.Qxf3#
- 1...Bb6
- 2.Qxf3#
- 1...Ba7
- 2.Qxf3#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...fxe2!
- 1...Qxe3+
- 1.Sxe4?
- Keys
- 1.Qa1!
- 1...Qxe3+
- 2.dxe3#
- 1...Bxe3+
- 2.dxe3#
- 1...Bxa1
- 2.Rxf3#
- 1...hxg5
- 2.Bxg5#
- 1...Bc5
- 2.Bxe5#
- 2.Qxe5#
- 1...Qb1
- 2.Bxe5#
- 1...Qc2
- 2.Bxe5#
- 1...Qd3
- 2.Bxe5#
- 1...Qf5
- 2.Sxd5#
- 1...Qg6
- 2.Bxe5#
- 1...Qh7
- 2.Bxe5#
- 1...Bb2
- 2.Rxf3#
- 1...Bc3
- 2.Rxf3#
- 1...Bb6
- 2.Bxe5#
- 2.Qxe5#
- 1...Ba7
- 2.Bxe5#
- 2.Qxe5#
- 1...Sc6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sb7
- 2.Se6#
- 1...Sf7
- 2.Se6#
- 1...Qxe3+
- 1.Qa1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 3
- Sets
- Q(d);CHECK,OGATE,P_SPINB(c),XR(E)::P(C),XQ(d)
- B(c);CHECK,OGATE,P_SPINQ(d),XR(E)::P(C),XB(c)
- B(c);P_SPINQ(d)::QAR1(A),XP(b)
- S(j);N_GUARD::S(I)
- S(j);N_GUARD::S(I),XS(j)
- P(i);OGATE,XS(I)::B(K),XP(i)
- Tries
- Try
- S(I);XQ(d)
- Threat
- QAR1(A),XP(b)
- Vars
- B(c);CHECK,OGATE,XR(E)::P(C),XB(c)
- Refutation
- P(g);XS(I)
- Try
- S(L);CHECK
- Vars
- Q(d);P_SPINB(c),XS(L)::QAR1(A),XP(b)
- Refutation
- K(e);P-FLIGHT
- Try
- B(K);CHECK,XP(h)
- Vars
- Q(d);P_SPINB(c),XB(K)::QAR1(A),XP(b)
- Refutation
- K(e);P_SPINQ(d),S_FLIGHT,XB(K)
- Try
- B(K);
- Vars
- Q(d);CHECK,OGATE,P_SPINB(c),XR(E)::P(C),XQ(d)
- B(c);CHECK,OGATE,P_SPINQ(d),XR(E)::P(C),XB(c)
- B(c);P_SPINQ(d)::QAR1(A),XP(b)
- S(j);N_GUARD::S(I)
- S(j);N_GUARD::S(I),XS(j)
- Refutation
- P(i);XS(I)
- Try
- B(K);
- Vars
- Q(d);CHECK,OGATE,P_SPINB(c),XR(E)::P(C),XQ(d)
- B(c);CHECK,OGATE,P_SPINQ(d),XR(E)::P(C),XB(c)
- B(c);P_SPINQ(d)::QAR1(A),XP(b)
- S(j);N_GUARD::S(I)
- S(j);N_GUARD::S(I),XS(j)
- Refutation
- P(i);XS(I)
- Try
- R(G);N_SPINR(E),P_PINQ(d),XB(c)
- Threat
- DUALS(2)
- Vars
- Q(d);N_SPINQ(d),P_PINR(E),XR(G)::QAR1(A),XP(b)
- Refutation
- P(h);N_SPINQ(d),XR(G)
- Try
- Q(A);
- Vars
- P(i);OGATE,XS(I)::B(K),XP(i)
- B(c);P_SPINQ(d)::QAR1(A),XP(b)
- S(j);N_GUARD::S(I)
- S(j);N_GUARD::S(I),XS(j)
- Refutation
- P(b);XQ(A)
- Try
- Actual
- Q(A);
- Vars
- Q(d);CHECK,OGATE,P_SPINB(c),XR(E)::P(C),XQ(d)
- B(c);CHECK,OGATE,P_SPINQ(d),XR(E)::P(C),XB(c)
- B(c);N_PINR(E),P_SPINQ(d),XQ(A)::R1(E),XP(b)
- P(i);OGATE,XS(I)::B(K),XP(i)
- Q(d);N_GUARD,P_SPINB(c)::B(K),XP(h)
- Q(d);N_GUARD,P_PINP(C),P_SPINB(c)::B(K),XP(h)
- Q(d);N_GUARD,P_SPINB(c),SBLOCK::S(L),XP(g)
- B(c);N_PINR(E),P_SPINQ(d)::R1(E),XP(b)
- S(j);N_GUARD::S(I)
- S(j);N_GUARD::S(I),XS(j)
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).