MESON Chess Problem Database
Problem Display
PID: 272526 (1K2Q2n/1p4Pb/BP1N4/2p1R2r/nNPkp1rp/1pb2R2/5p2/B4q2 w - - 0 1)
Gevers, Raymond
Die Schwalbe, 1932
#2
11 + 14
SOLUTION
- SOUND
- Sets
- 1...Rg6
- 2.Rxe4#
- 1...Rh6
- 2.Rd5#
- 1...Bf5
- 2.Rd5#
- 1...Sxb6
- 2.Bxc3#
- 1...b2
- 2.Sc2#
- 1...bxa6
- 2.Sc6#
- 1...Rg6
- Tries
- 1.Sf5+?
- 1...Bxf5
- 2.Rd5#
- 1...Rxf5!
- 1...Bxf5
- 1.Rxc3?
- threat
- 2.Sb5#
- 2.Rd3#
- 1...Qxc4
- 2.Rd3#
- 1...Qxa1
- 2.Sb5#
- 1...cxb4
- 2.Sb5#
- 1...bxa6
- 2.Sc6#
- 2.Rd3#
- 1...Qd3
- 2.Rxd3#
- 1...Sb2
- 2.Sb5#
- 1...b2
- 2.Sb5#
- 1...Sxc3!
- threat
- 1.Rxh5?
- threat
- 2.Rd5#
- 2.Qe5#
- 1...Qxc4
- 2.Qe5#
- 1...Sxb6
- 2.Bxc3#
- 2.Qe5#
- 1...Bf5
- 2.Sxf5#
- 1...Bg8
- 2.Sf5#
- 2.Qe5#
- 1...Sg6
- 2.Sf5#
- 2.Rd5#
- 1...Sf7
- 2.Rd5#
- 1...Rg5!
- threat
- 1.Qd7?
- threat
- 2.Sf7#
- 1...Qxc4
- 2.Sxc4#
- 1...Rxe5
- 2.Sf5#
- 1...Sxb6
- 2.Bxc3#
- 1...bxa6
- 2.Sc6#
- 1...Rg6
- 2.Rxe4#
- 1...Rh6
- 2.Rd5#
- 1...Bf5
- 2.Rd5#
- 1...Sf7
- 2.Sxf7#
- 1...Kxe5!
- threat
- 1.Qe6?
- threat
- 2.Sb5#
- 2.Qd5#
- 1...Rxe5
- 2.Sb5#
- 1...Sxb6
- 2.Sb5#
- 2.Bxc3#
- 1...bxa6
- 2.Sc6#
- 2.Qd5#
- 1...Bg8
- 2.Sb5#
- 1...Qxc4!
- threat
- 1.gxh8Q?
- threat
- 2.Rxe4#
- 2.Rd5#
- 2.Rg5#
- 1...Rxe5
- 2.Qhxe5#
- 2.Qexe5#
- 1...exf3
- 2.Re4#
- 2.Rd5#
- 2.Rg5#
- 1...cxb4
- 2.Rd5#
- 2.Rg5#
- 1...Rf4
- 2.Rxe4#
- 2.Rd5#
- 2.Rf5#
- 1...Rgg5
- 2.Rxe4#
- 2.Rd5#
- 2.Rxg5#
- 1...Rg6
- 2.Rxe4#
- 2.Rd5#
- 1...Rg8
- 2.Rxe4#
- 2.Rd5#
- 1...Rf5
- 2.Rxe4#
- 2.Rd5#
- 1...Rhg5
- 2.Rxe4#
- 2.Rd5#
- 2.Rxg5#
- 1...Rh6
- 2.Rxe4#
- 2.Rd5#
- 1...Bf5
- 2.Rxe4#
- 2.Rd5#
- 1...Bg6
- 2.Rxe4#
- 2.Rd5#
- 2.Rxh5#
- 1...Bg8
- 2.Rxe4#
- 2.Rd5#
- 1...e3
- 2.Re4#
- 2.Rd5#
- 2.Rg5#
- 1...Rg7!
- threat
- 1.gxh8B?
- threat
- 2.Rxe4#
- 2.Rd5#
- 2.Rg5#
- 1...Rxe5
- 2.Bxe5#
- 2.Qxe5#
- 1...exf3
- 2.Re4#
- 2.Rd5#
- 2.Rg5#
- 1...cxb4
- 2.Rd5#
- 2.Rg5#
- 1...Rf4
- 2.Rxe4#
- 2.Rd5#
- 2.Rf5#
- 1...Rgg5
- 2.Rxe4#
- 2.Rd5#
- 2.Rxg5#
- 1...Rg6
- 2.Rxe4#
- 2.Rd5#
- 1...Rg8
- 2.Rxe4#
- 2.Rd5#
- 1...Rf5
- 2.Rxe4#
- 2.Rd5#
- 1...Rhg5
- 2.Rxe4#
- 2.Rd5#
- 2.Rxg5#
- 1...Rh6
- 2.Rxe4#
- 2.Rd5#
- 1...Bf5
- 2.Rxe4#
- 2.Rd5#
- 1...Bg6
- 2.Rxe4#
- 2.Rd5#
- 2.Rxh5#
- 1...Bg8
- 2.Rxe4#
- 2.Rd5#
- 1...e3
- 2.Re4#
- 2.Rd5#
- 2.Rg5#
- 1...Rg7!
- threat
- 1.Sf5+?
- Keys
- 1.Qd8!
- threat
- 2.Sf7#
- 1...Kxe5
- 2.Qf6#
- 1...Qxc4
- 2.Sxc4#
- 1...Rxe5
- 2.Sf5#
- 1...Sxb6
- 2.Bxc3#
- 1...bxa6
- 2.Sc6#
- 1...Rg6
- 2.Rxe4#
- 1...Rh6
- 2.Rd5#
- 1...Bf5
- 2.Rd5#
- 1...Sf7
- 2.Sxf7#
- threat
- 1.Qd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(h);N_GUARD,S_CUTB(m)::R1(E),XP(g)
- R(k);N_GUARD::R1(E)
- B(m);S_CUTR(k)::R1(E)
- S(e);N_GUARD,XP(G)::B(A),XB(d)
- P(c);N_GUARD,N_SPINB(d)::S(C)
- P(l);N_GUARD,XB(F)::S(C)
- Tries
- Try
- S(H);CHECK
- Vars
- B(m);XS(H)::R1(E)
- Refutation
- R(k);XS(H)
- Try
- R(B);XB(d)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(D)::B(A)+R(B),DCHECK
- Q(a);XB(A)::S(H)
- P(j);XS(C)::S(H)
- Q(a);::B(A)+R(B),DCHECK,XQ(a)
- S(e);::S(H)
- P(c);::S(H)
- Refutation
- S(e);P_SPINS(e),XR(B)
- Try
- R(E);XR(k)
- Threat
- DUALS(2)
- Vars
- Q(a);XP(D)::QAB1(K)
- B(m);N_GUARD::S(H),XB(m)
- S(n);::R1(E)
- Refutation
- R(h);
- Try
- Q(K);
- Threat
- QAR(K)+S(H)
- Vars
- Q(a);XP(D)::QAR(K)+S(H),XQ(a)
- R(k);SBLOCK,XR(E)::QAR(K)+S(H),DCHECK
- S(e);N_GUARD,XP(G)::B(A),XB(d)
- P(l);N_GUARD,XB(F)::S(C)
- R(h);N_GUARD,S_CUTB(m)::R1(E),XP(g)
- R(k);N_GUARD::R1(E)
- B(m);S_CUTR(k)::R1(E)
- S(n);::QAR(K)+S(H),XS(n)
- Refutation
- K(f);S_FLIGHT,XR(E)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(k);XR(E)::S(H)
- B(m);::S(H)
- Refutation
- Q(a);XP(D)
- Try
- P(I);XS(n)
- Threat
- DUALS(3)
- Refutation
- R(h);
- Try
- P(I);XS(n)
- Threat
- DUALS(3)
- Refutation
- R(h);
- Try
- Actual
- Q(K);
- Threat
- QAR(K)+S(H)
- Vars
- K(f);OGATEB,S_FLIGHT,XR(E)::QAB1(K)
- Q(a);XP(D)::QAR(K)+S(H),XQ(a)
- R(k);SBLOCK,XR(E)::QAR(K)+S(H),DCHECK
- S(e);N_GUARD,XP(G)::B(A),XB(d)
- P(l);N_GUARD,XB(F)::S(C)
- R(h);N_GUARD,S_CUTB(m)::R1(E),XP(g)
- R(k);N_GUARD::R1(E)
- B(m);S_CUTR(k)::R1(E)
- S(n);::QAR(K)+S(H),XS(n)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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