MESON Chess Problem Database
Problem Display
PID: 33027 (8/3p1B1b/3ppQ2/8/n1P1k2p/p5pr/K1N1P2n/B2N4 w - - 0 1)
Gevers, Raymond
De Problemist, 1929
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Bf5
- 2.Qd4#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sb2
- 2.Sc3#
- 1...Sc3+
- 2.Sxc3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5
- 2.Bd5#
- 1...Bf5
- Tries
- 1.Kb1?
- 1...Sc3+
- 2.Sxc3#
- 1...Bf5
- 2.Qd4#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sb2
- 2.Sc3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5
- 2.Bd5#
- 1...a2+!
- 1...Sc3+
- 1.Kxa3?
- 1...Bf5
- 2.Qd4#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sb2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...d5
- 2.Qe5#
- 1...e5
- 2.Bd5#
- 1...g2+!
- 1...Bf5
- 1.Sde3?
- threat
- 2.Qd4#
- 1...Sf3
- 2.Qxf3#
- 1...e5
- 2.Bd5#
- 1...Sc3+!
- threat
- 1.Bb2?
- 1...Sc3+
- 2.Sxc3#
- 1...Sxb2
- 2.Sc3#
- 1...Bf5
- 2.Qd4#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5
- 2.Bd5#
- 1...axb2!
- 1...Sc3+
- 1.Bd4?
- 1...Sc3+
- 2.Sxc3#
- 1...Sb2
- 2.Sc3#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5
- 2.Bd5#
- 1...Bf5!
- 1...Sc3+
- 1.Bh5?
- 1...Sc3+
- 2.Sxc3#
- 1...Bf5
- 2.Qd4#
- 1...Sb2
- 2.Sc3#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Bf3#
- 2.Qf3#
- 1...Sf3
- 2.Bxf3#
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5!
- 1...Sc3+
- 1.Bxe6?
- threat
- 2.Bd5#
- 2.Qd4#
- 1...Sc3+
- 2.Sxc3#
- 1...Bf5
- 2.Qd4#
- 2.Qxf5#
- 1...Bg8
- 2.Qd4#
- 2.Qf5#
- 1...Sf3
- 2.Bd5#
- 2.Qxf3#
- 1...Sb6
- 2.Sc3#
- 2.Qd4#
- 1...d5
- 2.Bxd5#
- 2.Qd4#
- 2.Qe5#
- 1...dxe6!
- threat
- 1.Be8?
- 1...Sc3+
- 2.Sxc3#
- 1...Bf5
- 2.Qd4#
- 1...Sb2
- 2.Sc3#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sg4
- 2.Qf3#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5!
- 1...Sc3+
- 1.Qxh4+?
- 1...Kf5
- 2.Sde3#
- 2.Sce3#
- 2.e4#
- 1...Sg4
- 2.Qxg4#
- 1...Rxh4!
- 1...Kf5
- 1.Kb1?
- Keys
- 1.Qg5!
- 1...Sc3+
- 2.Sxc3#
- 1...Sb2
- 2.Sc3#
- 1...Bf5
- 2.Qe3#
- 1...Bg6
- 2.Bxg6#
- 1...Bg8
- 2.Bg6#
- 1...Sf1
- 2.Qg4#
- 1...Sf3
- 2.Qg4#
- 1...Sg4
- 2.Qxg4#
- 1...Sc5
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...g2
- 2.Sf2#
- 1...d5
- 2.Qe5#
- 1...e5
- 2.Bd5#
- 1...Sc3+
- 1.Qg5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(k);SBLOCK::QAR1(G)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(e);N_GUARD::S(B)
- S(e);CHECK,N_GUARD::S(B),XS(e)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- P(i);OGATE::B(H)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- B(k);SBLOCK::QAR1(G)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(e);N_GUARD::S(B)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- P(i);OGATE::B(H)
- Refutation
- P(b);CHECK
- Try
- K(C);P-FLIGHT,XP(b)
- Vars
- B(k);SBLOCK::QAR1(G)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(e);N_GUARD::S(B)
- S(e);N_GUARD::S(B),XS(e)
- P(h);N_GUARD::QAR1(G)
- P(i);OGATE::B(H)
- Refutation
- P(c);CHECK
- Try
- S(B);
- Threat
- QAR1(G)
- Vars
- S(a);N_GUARD::QAB1(G),XS(a)
- P(i);OGATE::B(H)
- Refutation
- S(e);CHECK
- Try
- B(A);
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- S(e);N_GUARD,XB(A)::S(B)
- B(k);SBLOCK::QAR1(G)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- S(e);N_GUARD::S(B)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- P(i);OGATE::B(H)
- Refutation
- P(b);XB(A)
- Try
- B(A);
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- P(i);OGATE::B(H)
- Refutation
- B(k);
- Try
- B(H);
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- B(k);SBLOCK::QAR1(G)
- S(e);N_GUARD::S(B)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- Refutation
- P(i);
- Try
- B(H);XP(i)
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- Refutation
- P(j);XB(H)
- Try
- B(H);
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- B(k);SBLOCK::QAR1(G)
- S(e);N_GUARD::S(B)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAB1(G)
- S(a);N_GUARD::QAB1(G),XS(a)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- Refutation
- P(i);
- Try
- Q(G);CHECK,XP(g)
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR2(G),XS(a)
- Refutation
- R(d);XQ(G)
- Try
- Actual
- Q(G);
- Vars
- S(e);CHECK,N_GUARD::S(B),XS(e)
- S(e);N_GUARD::S(B)
- B(k);SBLOCK::QAR1(G)
- B(k);N_GUARD::B(H),XB(k)
- B(k);N_GUARD::B(H)
- S(a);N_GUARD::QAR2(G)
- S(a);N_GUARD::QAR2(G),XS(a)
- P(c);N_GUARD::S(B)
- P(h);N_GUARD::QAR1(G)
- P(i);OGATE::B(H)
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).