MESON Chess Problem Database
Problem Display
PID: 185695 (4R3/3p2Nb/1P1k4/2bP2R1/p2pP3/P2P1pn1/1Q2pN1B/4K2n w - - 0 1)
Gevers, Raymond
British Chess Magazine, 1918
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Bxa3
- 2.Qxa3#
- 1...Bb4+
- 2.Qxb4#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxe4
- 2.Sxe4#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6
- 2.Rxg6#
- 1...Bg8
- 2.Sf5#
- 1...Sxf2
- 2.Bxg3#
- 1...Bxa3
- Tries
- 1.Sxh1?
- threat
- 2.Bxg3#
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.Qxa3#
- 1...Bxb6
- 2.Qxb6#
- 1...f2+!
- threat
- 1.Rxg3?
- threat
- 2.Rg6#
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.Qxa3#
- 1...Bxb6
- 2.Qxb6#
- 1...Sxg3
- 2.Bxg3#
- 1...Bg6
- 2.Rxg6#
- 1...Bxe4!
- threat
- 1.Rg4?
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.Qxa3#
- 1...Bxb6
- 2.Qxb6#
- 1...Sxf2
- 2.Bxg3#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6
- 2.Rxg6#
- 1...Bg8
- 2.Sf5#
- 1...Bxe4!
- 1...Bb4+
- 1.Rf5?
- threat
- 2.Rf6#
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.Qxa3#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxf5
- 2.Sxf5#
- 1...Bg8!
- threat
- 1.Rh5?
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.Qxa3#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxe4
- 2.Sxe4#
- 1...Sxf2
- 2.Bxg3#
- 1...Bg8
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6!
- 1...Bb4+
- 1.Qxd4?
- threat
- 2.Qe5#
- 2.Qf6#
- 2.e5#
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.e5#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxe4
- 2.Sxe4#
- 2.Qe5#
- 2.Qf6#
- 1...Bg8
- 2.Sf5#
- 2.Qe5#
- 2.e5#
- 1...Bf5
- 2.Sxf5#
- 2.Qe5#
- 2.e5#
- 1...Bxd4!
- threat
- 1.Qb1?
- 1...Bb4+
- 2.Qxb4#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxe4
- 2.Sxe4#
- 1...Sxf2
- 2.Bxg3#
- 1...Bg8
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6
- 2.Rxg6#
- 1...Bxa3!
- 1...Bb4+
- 1.Qb3?
- threat
- 2.e5#
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.Qxa3#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxe4
- 2.Sxe4#
- 1...axb3!
- threat
- 1.Qb4?
- 1...Bxe4
- 2.Sxe4#
- 1...Sxf2
- 2.Bxg3#
- 1...Bg8
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6
- 2.Rxg6#
- 1...Bxb4+!
- 1...Bxe4
- 1.Sxh1?
- Keys
- 1.Qb5!
- 1...Bb4+
- 2.Qxb4#
- 1...Bxa3
- 2.e5#
- 1...Bxb6
- 2.Qxb6#
- 1...Bxe4
- 2.Sxe4#
- 1...Sxf2
- 2.Bxg3#
- 1...Bg8
- 2.Sf5#
- 1...Bf5
- 2.Sxf5#
- 1...Bg6
- 2.Rxg6#
- 1...Bb4+
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- B(j);XP(G)::S(C),XB(j)
- B(j);N_GUARD::S(K),XB(j)
- B(j);N_GUARD::R(I),XB(j)
- B(j);N_GUARD::S(K)
- S(a);N_GUARD,XS(C)::B(D),XS(d)
- Tries
- Try
- S(C);XS(a)
- Threat
- B(D),XS(d)
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- Refutation
- P(c);CHECK
- Try
- R(I);XS(d)
- Threat
- B(D)+R(I),DCHECK
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- S(a);OGATE,P_SPINS(a),XR(I)::B(D),XS(a)
- B(j);::B(D)+R(I),DCHECK,XB(j)
- Refutation
- B(j);XP(G)
- Try
- R(I);
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- S(a);N_GUARD,XS(C)::B(D),XS(d)
- B(j);N_GUARD::S(K),XB(j)
- B(j);N_GUARD::R(I),XB(j)
- B(j);N_GUARD::S(K)
- Refutation
- B(j);XP(G)
- Try
- R(I);
- Threat
- R(I)
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- B(j);XR(I)::S(K),XB(j)
- Refutation
- B(j);
- Try
- R(I);
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- B(j);XP(G)::S(C),XB(j)
- S(a);N_GUARD,XS(C)::B(D),XS(d)
- B(j);N_GUARD::S(K)
- B(j);N_GUARD::S(K),XB(j)
- Refutation
- B(j);
- Try
- Q(B);XP(f)
- Threat
- DUALS(3)
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);XP(E)::P(G)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- Refutation
- B(g);XQ(B)
- Try
- Q(B);
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- B(j);XP(G)::S(C),XB(j)
- S(a);N_GUARD,XS(C)::B(D),XS(d)
- B(j);N_GUARD::S(K)
- B(j);N_GUARD::S(K),XB(j)
- B(j);N_GUARD::R(I),XB(j)
- Refutation
- B(g);XP(E)
- Try
- Q(B);
- Threat
- P(G)
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);OGATE,XP(E)::QAB(B),XB(g)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- B(j);XP(G)::S(C),XB(j)
- Refutation
- P(e);XQ(B)
- Try
- Q(B);P_PINB(g)
- Vars
- B(j);XP(G)::S(C),XB(j)
- S(a);N_GUARD,XS(C)::B(D),XS(d)
- B(j);N_GUARD::S(K)
- B(j);N_GUARD::S(K),XB(j)
- B(j);N_GUARD::R(I),XB(j)
- Refutation
- B(g);CHECK,N_SPINB(g),XQ(B)
- Try
- Actual
- Q(B);
- Vars
- B(g);CHECK,OGATEB::QAB(B),XB(g)
- B(g);XP(E)::P(G)
- B(g);OGATE,XP(J)::QAR2(B),XB(g)
- B(j);XP(G)::S(C),XB(j)
- S(a);N_GUARD,XS(C)::B(D),XS(d)
- B(j);N_GUARD::S(K)
- B(j);N_GUARD::S(K),XB(j)
- B(j);N_GUARD::R(I),XB(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).