MESON Chess Problem Database
Problem Display
PID: 3093 (3Q1b2/1p3N2/1P5p/n1kb3R/Bnpp3B/P1R5/8/NK6 w - - 0 1)
Gevers, Raymond
Source?, 1918
#2
10 + 9
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Bxe7#
- 1...Bg7
- 2.Be7#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Bd6
- Tries
- 1.Sc2?
- threat
- 2.axb4#
- 1...Sxc2
- 2.Rxd5#
- 1...Sa2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sac6!
- threat
- 1.Sg5?
- threat
- 2.Se4#
- 2.Se6#
- 1...Be4+
- 2.Sxe4#
- 1...dxc3
- 2.Se6#
- 2.Bf2#
- 1...d3
- 2.Se6#
- 2.Bf2#
- 1...Be6
- 2.Se4#
- 2.Sxe6#
- 1...hxg5!
- threat
- 1.Sd6?
- threat
- 2.Se4#
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Bxd6!
- threat
- 1.Sxh6?
- 1...Bxh6
- 2.Be7#
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Be7
- 2.Bxe7#
- 1...Bg7
- 2.Be7#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...Bd6!
- 1...Bxh6
- 1.Sh8?
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Be7
- 2.Bxe7#
- 1...Bg7
- 2.Be7#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...Bd6!
- 1...dxc3
- 1.Be8?
- 1...dxc3
- 2.Bf2#
- 1...Sbc6
- 2.Rxd5#
- 1...d3
- 2.Bf2#
- 1...Bd6
- 2.Qxd6#
- 1...Be7
- 2.Bxe7#
- 1...Bg7
- 2.Be7#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6!
- 1...dxc3
- 1.Be1?
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...Be7!
- 1...dxc3
- 1.Bf2?
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...Be7!
- 1...Bd6
- 1.Bg3?
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Bg7
- 2.Bd6#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...Be7!
- 1...dxc3
- 1.Rc1?
- 1...d3
- 2.Bf2#
- 1...Be7
- 2.Bxe7#
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Be7#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...c3!
- 1...d3
- 1.Rc2?
- 1...Sxc2
- 2.Rxd5#
- 1...d3
- 2.Bf2#
- 1...Be7
- 2.Bxe7#
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Be7#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...c3!
- 1...Sxc2
- 1.Rxc4+?
- 1...Sxc4
- 2.Sb3#
- 1...Kxc4!
- 1...Sxc4
- 1.Re5?
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Be7
- 2.Bxe7#
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Be7#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...h5!
- 1...dxc3
- 1.Rf5?
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Be7
- 2.Bxe7#
- 1...Bd6
- 2.Qxd6#
- 1...Bg7
- 2.Be7#
- 2.Qd6#
- 1...Sa2
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sd3
- 2.Rxd5#
- 1...Sa6
- 2.Rxd5#
- 1...Sbc6
- 2.Rxd5#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...h5!
- 1...dxc3
- 1.Qc7+?
- 1...Sac6
- 2.Sb3#
- 1...Sbc6!
- 1...Sac6
- 1.Qxd5+?
- 1...Kxb6
- 2.Qxa5#
- 1...Sxd5!
- 1...Kxb6
- 1.Sc2?
- Keys
- 1.Se5!
- 1...Be4+
- 2.Sd3#
- 1...dxc3
- 2.Bf2#
- 1...d3
- 2.Bf2#
- 1...Bh1
- 2.Sd3#
- 1...Bg2
- 2.Sd3#
- 1...Bf3
- 2.Sd3#
- 1...Bc6
- 2.Sd3#
- 1...Be6
- 2.Sd3#
- 1...Bf7
- 2.Sd3#
- 1...Bg8
- 2.Sd3#
- 1...Bd6
- 2.Sd7#
- 1...Be7
- 2.Bxe7#
- 1...Bg7
- 2.Be7#
- 1...Sa2
- 2.Sd3#
- 1...Sc2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sa6
- 2.Sd3#
- 1...Sbc6
- 2.Sd3#
- 1...Sb3
- 2.Sxb3#
- 1...Sac6
- 2.Sb3#
- 1...Be4+
- 1.Se5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(i);N_GUARD::QAB1(J),XB(i)
- B(i);N_GUARD::B(F),XB(i)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- Tries
- Try
- S(A);
- Threat
- P(C),XS(a)
- Vars
- S(a);N_GUARD,XS(A)::R1(G),XB(f)
- S(a);N_GUARD::R1(G),XB(f)
- Refutation
- S(d);
- Try
- S(I);N_PINB(f)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK::R(G)+S(I),DCHECK,XB(f)
- Refutation
- P(g);XS(I)
- Try
- S(I);
- Threat
- S(I)
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- Refutation
- B(i);XS(I)
- Try
- S(I);XP(g)
- Vars
- B(i);N_GUARD,XS(I)::B(F)
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::B(F)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- S(I);
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::B(F)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- B(E);
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- S(a);N_GUARD::R1(G),XB(f)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::QAB1(J),XB(i)
- B(i);N_GUARD::B(F),XB(i)
- S(d);N_GUARD::S(A),XS(d)
- Refutation
- S(d);
- Try
- B(F);
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::QAB1(J),XB(i)
- B(i);N_GUARD::QAB1(J)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- B(F);
- Vars
- B(i);N_GUARD::QAB1(J),XB(i)
- B(i);N_GUARD::QAB1(J)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- B(F);
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- B(i);
- Try
- R(D);
- Vars
- P(c);OGATEB::B(F)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::QAB1(J),XB(i)
- S(a);N_GUARD::R1(G),XB(f)
- S(a);N_GUARD,N_SPINP(b)::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- P(b);
- Try
- R(D);
- Vars
- S(a);N_GUARD,N_SPINP(b),XR(D)::R1(G),XB(f)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::QAB1(J),XB(i)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- P(b);
- Try
- R(D);CHECK,XP(b)
- Vars
- S(d);SBLOCK,XR(D)::S(A)
- Refutation
- K(e);N_SPINB(f),P-FLIGHT,XR(D)
- Try
- R(G);
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::QAB1(J),XB(i)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- P(g);
- Try
- R(G);
- Vars
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::QAB1(J),XB(i)
- S(a);N_GUARD::R1(G),XB(f)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(A)
- Refutation
- P(g);
- Try
- Q(J);CHECK
- Vars
- S(d);P_SPINS(d)::S(A)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(J);CHECK,XB(f)
- Vars
- K(e);N_SPINP(b),OGATE,S_FLIGHT,XP(H)::QAB1(J),XS(d)
- Refutation
- S(a);P_SPINS(a),XQ(J)
- Try
- Actual
- S(I);N_PINB(f)
- Vars
- B(f);CHECK::R(G)+S(I),DCHECK
- P(c);N_SPINP(b),OGATEB,XR(D)::B(F)
- P(c);OGATEB::B(F)
- B(f);::R(G)+S(I),DCHECK
- B(i);SBLOCK::S(I)
- B(i);N_GUARD::B(F),XB(i)
- B(i);N_GUARD::B(F)
- S(a);N_GUARD::S(I)
- S(a);N_GUARD::S(I),XS(a)
- S(d);N_GUARD::S(A),XS(d)
- S(d);N_GUARD::S(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).