MESON Chess Problem Database
Problem Display
PID: 3094 (8/3p4/3P2Q1/2R1pn1r/1Nppkpn1/4PN2/3P2P1/4KB2 w - - 0 1)
Gevers, Raymond
Source?, 1918
#2
10 + 9
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sf2
- 2.Rxe5#
- 1...Sh2
- 2.Rxe5#
- 1...Sxe3
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sh6
- 2.Rxe5#
- 1...c3
- 2.Bd3#
- 1...dxe3
- 2.Rxc4#
- 1...d3
- 2.Rxc4#
- 1...fxe3
- 2.Qxg4#
- 1...Rh1
- Tries
- 1.Ke2?
- 1...Sxe3
- 2.Rxe5#
- 1...dxe3
- 2.Rxc4#
- 1...fxe3
- 2.Qxg4#
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sf2
- 2.Rxe5#
- 1...Sh2
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sh6
- 2.Rxe5#
- 1...c3
- 2.d3#
- 1...d3+!
- 1...Sxe3
- 1.Sa2?
- 1...Sxe3
- 2.Rxe5#
- 1...dxe3
- 2.Sc3#
- 1...fxe3
- 2.Qxg4#
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sf2
- 2.Rxe5#
- 1...Sh2
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sh6
- 2.Rxe5#
- 1...d3
- 2.Sc3#
- 1...c3!
- 1...Sxe3
- 1.Be2?
- 1...Sxe3
- 2.Rxe5#
- 1...dxe3
- 2.Rxc4#
- 1...fxe3
- 2.Qxg4#
- 1...c3
- 2.Bd3#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sf2
- 2.Rxe5#
- 1...Sh2
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sh6
- 2.Rxe5#
- 1...d3
- 2.Rxc4#
- 1...Rh1+!
- 1...Sxe3
- 1.Bxc4?
- threat
- 2.Bd3#
- 2.Bd5#
- 1...Sxe3
- 2.Bd3#
- 2.Rxe5#
- 2.d3#
- 1...fxe3
- 2.Qxg4#
- 1...Sf2
- 2.Bd5#
- 2.Rxe5#
- 1...Sf6
- 2.Bd3#
- 2.Rxe5#
- 1...d3
- 2.Bxd3#
- 2.Bd5#
- 1...Rh1+!
- threat
- 1.Rxc4?
- threat
- 2.Bd3#
- 1...fxe3
- 2.Qxg4#
- 1...Rh1
- 2.Sg5#
- 1...Sf2!
- threat
- 1.Qh7?
- 1...Rxh7
- 2.Sg5#
- 1...Sxe3
- 2.Rxe5#
- 1...dxe3
- 2.Rxc4#
- 1...d3
- 2.Rxc4#
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Sf2
- 2.Rxe5#
- 1...Sh2
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sh6
- 2.Rxe5#
- 1...c3
- 2.Bd3#
- 1...fxe3!
- 1...Rxh7
- 1.d3+?
- 1...Kxe3
- 2.Sc2#
- 2.Sd5#
- 1...cxd3!
- 1...Kxe3
- 1.Ke2?
- Keys
- 1.Sd5!
- 1...Sxe3
- 2.Sf6#
- 1...dxe3
- 2.Sc3#
- 1...fxe3
- 2.Qxg4#
- 1...Rh1
- 2.Sg5#
- 1...Rh2
- 2.Sg5#
- 1...Rh3
- 2.Sg5#
- 1...Rh4
- 2.Sg5#
- 1...Rg5
- 2.Sxg5#
- 1...Rh6
- 2.Sg5#
- 1...Rh7
- 2.Sg5#
- 1...Rh8
- 2.Sg5#
- 1...Sf2
- 2.Sf6#
- 1...Sh2
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...c3
- 2.d3#
- 1...d3
- 2.Sc3#
- 1...Sxe3
- 1.Sd5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(h);N_GUARD,P_PINB(B)::S(F)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD::S(F),XR(h)
- S(e);N_GUARD::R1(H),XP(f)
- S(e);N_GUARD,XP(E)::R1(H),XP(f)
- P(a);N_GUARD::B(B)
- P(b);OGATEB,XP(E)::R(H),XP(a)
- P(b);OGATEB::R(H),XP(a)
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(e);N_GUARD,XP(E)::R1(H),XP(f)
- P(b);OGATEB,XP(E)::R(H),XP(a)
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD,P_PINP(D)::S(F)
- R(h);N_GUARD::S(F),XR(h)
- S(e);N_GUARD::R1(H),XP(f)
- P(a);N_GUARD::P(C)
- Refutation
- P(b);CHECK
- Try
- S(G);
- Vars
- S(e);N_GUARD,XP(E)::R1(H),XP(f)
- P(b);N_GUARD,XP(E)::S(G)
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- R(h);N_GUARD,P_PINB(B)::S(F)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD::S(F),XR(h)
- S(e);N_GUARD::R1(H),XP(f)
- P(b);N_GUARD::S(G)
- Refutation
- P(a);
- Try
- B(B);
- Vars
- S(e);N_GUARD,XP(E)::R1(H),XP(f)
- P(b);OGATEB,XP(E)::R(H),XP(a)
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- P(a);N_GUARD::B(B)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD::S(F),XR(h)
- S(e);N_GUARD::R1(H),XP(f)
- P(b);OGATEB::R(H),XP(a)
- Refutation
- R(h);CHECK
- Try
- B(B);XP(a)
- Threat
- DUALS(2)
- Vars
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- Refutation
- R(h);CHECK
- Try
- R(H);P_PINP(b),XP(a)
- Threat
- B(B)
- Vars
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- R(h);N_GUARD,P_PINB(B)::S(F)
- Refutation
- S(e);
- Try
- Q(J);
- Vars
- R(h);N_GUARD,N_SPINS(g),XQ(J)::S(F)
- S(e);N_GUARD,XP(E)::R1(H),XP(f)
- P(b);OGATEB,XP(E)::R(H),XP(a)
- P(b);OGATEB::R(H),XP(a)
- R(h);N_GUARD,P_PINB(B)::S(F)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD::S(F),XR(h)
- S(e);N_GUARD::R1(H),XP(f)
- P(a);N_GUARD::B(B)
- Refutation
- P(d);XP(E)
- Try
- P(C);CHECK
- Refutation
- P(a);XP(C)
- Try
- Actual
- S(G);
- Vars
- S(e);N_GUARD,XP(E)::S(G)
- P(b);N_GUARD,XP(E)::S(G)
- P(d);OGATEB,XP(E)::QAR2(J),XS(e)
- R(h);N_GUARD,P_PINB(B)::S(F)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD::S(F),XR(h)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- P(a);N_GUARD::P(C)
- P(b);N_GUARD::S(G)
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).