MESON Chess Problem Database
Problem Display
PID: 110667 (8/p7/p2p1Qp1/B2P1bP1/p1P1P2K/R2Bk3/1P4P1/5Rn1 w - - 0 1)
Sommer, Bruno Oswald
2nd Prize, Match: Baden - Berlin, 1954
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bh3
- 2.Qf2#
- 1...Bxe4
- 2.Qf2#
- 1...Bg4
- 2.Qf2#
- 1...Be6
- 2.Qf2#
- 1...Bd7
- 2.Qf2#
- 1...Bc8
- 2.Qf2#
- 1...Se2
- 2.Rf3#
- 1...Sf3+
- 2.Rxf3#
- 1...Sh3
- 2.Rf3#
- 1...Bh3
- Tries
- 1.Kg3?
- 1...Bxe4
- 2.Qf2#
- 1...Bh3
- 2.Qf2#
- 1...Bg4
- 2.Qf2#
- 1...Be6
- 2.Qf2#
- 1...Bd7
- 2.Qf2#
- 1...Bc8
- 2.Qf2#
- 1...Sf3
- 2.Rxf3#
- 1...Sh3
- 2.Re1#
- 2.Rf3#
- 1...Se2+!
- 1...Bxe4
- 1.Be1?
- 1...Sf3+
- 2.Rxf3#
- 1...Bxe4
- 2.Qf2#
- 1...Bh3
- 2.Qf2#
- 1...Bg4
- 2.Qf2#
- 1...Be6
- 2.Qf2#
- 1...Bd7
- 2.Qf2#
- 1...Bc8
- 2.Qf2#
- 1...Se2
- 2.Rf3#
- 1...Sh3
- 2.Rf3#
- 1...a5!
- 1...Sf3+
- 1.Bc3?
- threat
- 2.Qd4#
- 1...Sf3+
- 2.Rxf3#
- 1...Se2
- 2.Rf3#
- 1...Kxd3!
- threat
- 1.Bb4?
- 1...Sf3+
- 2.Rxf3#
- 1...Bxe4
- 2.Qf2#
- 1...Bh3
- 2.Qf2#
- 1...Bg4
- 2.Qf2#
- 1...Be6
- 2.Qf2#
- 1...Bd7
- 2.Qf2#
- 1...Bc8
- 2.Qf2#
- 1...Se2
- 2.Rf3#
- 1...Sh3
- 2.Rf3#
- 1...a5!
- 1...Sf3+
- 1.Bb6+?
- 1...Kd2
- 2.Qc3#
- 1...axb6!
- 1...Kd2
- 1.Rxg1?
- 1...Kf2
- 2.Qd4#
- 1...Kf4
- 2.Bd2#
- 1...Bxe4
- 2.Re1#
- 1...Bh3
- 2.Re1#
- 1...Be6
- 2.Re1#
- 1...Bd7
- 2.Re1#
- 1...Bc8
- 2.Re1#
- 1...Bg4!
- 1...Kf2
- 1.Rf2?
- 1...Sf3+
- 2.Rxf3#
- 1...Bxe4
- 2.Bd2#
- 1...Bh3
- 2.Bb1#
- 2.Bc2#
- 2.Bd2#
- 1...Bg4
- 2.Bb1#
- 2.Bc2#
- 2.Bd2#
- 1...Be6
- 2.Bb1#
- 2.Bc2#
- 2.Bd2#
- 1...Bd7
- 2.Bb1#
- 2.Bc2#
- 2.Bd2#
- 1...Bc8
- 2.Bb1#
- 2.Bc2#
- 2.Bd2#
- 1...Se2
- 2.Rf3#
- 1...Sh3
- 2.Rf3#
- 1...Kxf2!
- 1...Sf3+
- 1.Rxf5?
- 1...Sf3+
- 2.Rxf3#
- 1...Se2
- 2.Rf3#
- 1...Sh3
- 2.Rf3#
- 1...gxf5!
- 1...Sf3+
- 1.Qg7?
- threat
- 2.Qxa7#
- 1...Sf3+
- 2.Rxf3#
- 1...Se2
- 2.Rf3#
- 1...Bd7!
- threat
- 1.c5?
- 1...Sf3+
- 2.Rxf3#
- 1...Bxe4
- 2.Qf2#
- 1...Se2
- 2.Rf3#
- 1...Bh3
- 2.Qf2#
- 1...Bg4
- 2.Qf2#
- 1...Be6
- 2.Qf2#
- 1...Bd7
- 2.Qf2#
- 1...Bc8
- 2.Qf2#
- 1...Sh3
- 2.Rf3#
- 1...dxc5!
- 1...Sf3+
- 1.exf5?
- 1...Sf3+
- 2.Rxf3#
- 1...Se2
- 2.Rf3#
- 1...Sh3
- 2.Rf3#
- 1...gxf5!
- 1...Sf3+
- 1.Kg3?
- Keys
- 1.Rf4!
- 1...Sf3+
- 2.Rxf3#
- 1...Kxf4
- 2.Bd2#
- 1...Bxe4
- 2.Rxe4#
- 1...Bh3
- 2.Bf1#
- 1...Bg4
- 2.Bf1#
- 1...Be6
- 2.Bf1#
- 1...Bd7
- 2.Bf1#
- 1...Bc8
- 2.Bf1#
- 1...Se2
- 2.Rf3#
- 1...Sh3
- 2.Rf3#
- 1...Sf3+
- 1.Rf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(d);OGATE::QAB1(L)
- B(d);OGATE,XP(G)::QAB1(L)
- S(a);N_GUARD::R1(A)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- B(d);OGATE,XP(G)::QAB1(L)
- B(d);OGATE::QAB1(L)
- S(a);N_GUARD::R1(A),XS(a)
- Refutation
- S(a);CHECK
- Try
- B(I);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(d);OGATE,XP(G)::QAB1(L)
- B(d);OGATE::QAB1(L)
- S(a);N_GUARD::R1(A)
- Refutation
- P(e);
- Try
- B(I);
- Threat
- QAB1(L)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);N_GUARD::R1(A)
- Refutation
- K(b);P-FLIGHT,XB(E)
- Try
- B(I);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(d);OGATE,XP(G)::QAB1(L)
- B(d);OGATE::QAB1(L)
- S(a);N_GUARD::R1(A)
- Refutation
- P(e);
- Try
- B(I);CHECK
- Vars
- K(b);S_FLIGHT::QAB1(L)
- Refutation
- P(h);XB(I)
- Try
- R(A);XS(a)
- Vars
- K(b);P_SPINB(d),S_FLIGHT::QAB(L)
- K(b);P_SPINB(d),S_FLIGHT::B(I)
- B(d);XP(G)::R(A)
- B(d);::R(A)
- Refutation
- B(d);
- Try
- R(A);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(d);XP(G)::B(I)
- S(a);N_GUARD::R1(A)
- Refutation
- K(b);P_SPINB(d),S_FLIGHT,XR(A)
- Try
- R(A);XB(d)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);N_GUARD::R1(A)
- Refutation
- P(g);XR(A)
- Try
- Q(L);
- Threat
- QAB(L),XP(h)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);N_GUARD::R1(A)
- Refutation
- B(d);
- Try
- P(F);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(d);OGATE,XP(G)::QAB1(L)
- S(a);N_GUARD::R1(A)
- B(d);OGATE::QAB1(L)
- Refutation
- P(f);XP(F)
- Try
- P(G);XB(d)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);N_GUARD::R1(A)
- Refutation
- P(g);XP(G)
- Try
- Actual
- R(A);
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- K(b);P_SPINB(d),S_FLIGHT,XR(A)::B(I)
- B(d);OGATE,XP(G)::R1(A),XB(d)
- B(d);::R(D)+B(E)
- S(a);N_GUARD::R1(A)
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).