MESON Chess Problem Database
Problem Display
PID: 164680 (4R1N1/5p1K/4pp2/2pRb3/2pnk3/2P1N1P1/3Q2P1/3B4 w - - 0 1)
Evans, TC
The Observer, 1926
(First published on Sun Sep 12 1926)
#2
10 + 8
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bf4
- 2.Sxf6#
- 1...Bd6
- 2.Sxf6#
- 1...Bc7
- 2.Sxf6#
- 1...Bb8
- 2.Sxf6#
- 1...Sc2
- 2.Bxc2#
- 2.Bf3#
- 1...Se2
- 2.Bc2#
- 1...Sb3
- 2.Bc2#
- 2.Bf3#
- 1...Sf3
- 2.Bc2#
- 2.Bxf3#
- 2.gxf3#
- 1...Sb5
- 2.Bc2#
- 2.Bf3#
- 1...Sf5
- 2.Bc2#
- 2.Bf3#
- 1...Sc6
- 2.Bc2#
- 2.Bf3#
- 1...exd5
- 2.Sxf6#
- 1...Bf4
- Tries
- 1.Sxc4?
- 1...Kf5
- 2.Sd6#
- 2.Qf4#
- 1...Bxg3
- 2.Sxf6#
- 1...exd5
- 2.Sd6#
- 1...Bf4
- 2.Sxf6#
- 1...Bd6
- 2.Sxf6#
- 1...Bc7
- 2.Sxf6#
- 1...Bb8
- 2.Sxf6#
- 1...Sc2
- 2.Bxc2#
- 2.Qd3#
- 1...Se2
- 2.Bc2#
- 2.Qd3#
- 1...Sb3
- 2.Bc2#
- 2.Qd3#
- 1...Sf3
- 2.Bc2#
- 2.Qd3#
- 1...Sb5
- 2.Bc2#
- 2.Qd3#
- 1...Sf5
- 2.Bc2#
- 2.Bf3#
- 2.Qd3#
- 1...Sc6
- 2.Bc2#
- 2.Qd3#
- 1...f5
- 2.Rxe5#
- 1...Kxd5!
- 1...Kf5
- 1.Rxd4+?
- 1...cxd4
- 2.Bf3#
- 1...Bxd4!
- 1...cxd4
- 1.Rxc5?
- 1...Bxg3
- 2.Qxd4#
- 1...Bf4
- 2.Sxf6#
- 2.Qxd4#
- 1...Bd6
- 2.Sxf6#
- 2.Qxd4#
- 1...Bc7
- 2.Sxf6#
- 2.Qxd4#
- 1...Bb8
- 2.Sxf6#
- 2.Qxd4#
- 1...Sc2
- 2.Bxc2#
- 2.Bf3#
- 1...Se2
- 2.Bc2#
- 1...Sb3
- 2.Bc2#
- 2.Bf3#
- 1...Sf3
- 2.Bc2#
- 2.Bxf3#
- 2.gxf3#
- 1...Sb5
- 2.Bc2#
- 2.Bf3#
- 1...Sf5
- 2.Bc2#
- 2.Bf3#
- 1...Sc6
- 2.Bc2#
- 2.Bf3#
- 1...f5!
- 1...Bxg3
- 1.Rxe5+?
- 1...fxe5
- 2.Sf6#
- 1...Kxe5!
- 1...fxe5
- 1.Rxe6?
- threat
- 2.Sxf6#
- 1...Sxe6
- 2.Bc2#
- 2.Bf3#
- 1...f5
- 2.Sf6#
- 2.Rdxe5#
- 2.Rexe5#
- 1...fxe6!
- threat
- 1.cxd4?
- threat
- 2.Bc2#
- 2.Bf3#
- 1...cxd4
- 2.Bf3#
- 1...Bxg3!
- threat
- 1.Sxc4?
- Keys
- 1.Sf5!
- 1...Kxd5
- 2.Bf3#
- 1...Kxf5
- 2.Qf4#
- 1...Bxg3
- 2.Sxf6#
- 1...Sxf5
- 2.Bc2#
- 2.Bf3#
- 1...exd5
- 2.Sd6#
- 1...exf5
- 2.Sxf6#
- 1...Bf4
- 2.Sxf6#
- 1...Bd6
- 2.Sxf6#
- 1...Bc7
- 2.Sxf6#
- 1...Bb8
- 2.Sxf6#
- 1...Sc2
- 2.Bxc2#
- 1...Se2
- 2.Bc2#
- 1...Sb3
- 2.Bc2#
- 1...Sf3
- 2.Bc2#
- 1...Sb5
- 2.Bc2#
- 1...Sc6
- 2.Bc2#
- 1...Kxd5
- 1.Sf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(e);N_GUARD,P_SPINP(f)::S(J),XP(g)
- S(b);N_GUARD::B(A)
- P(f);P_SPINB(e),XR(G)::S(J),XP(g)
- Tries
- Try
- S(E);XP(a)
- Vars
- B(e);N_GUARD,P_SPINP(f),XP(F)::S(J),XP(g)
- P(f);P_SPINB(e),SBLOCK,XR(G)::S(E)
- B(e);N_GUARD,P_SPINP(f)::S(J),XP(g)
- P(g);N_GUARD::R1(G),XB(e)
- Refutation
- K(c);P_SPINS(b),S_FLIGHT,XR(G)
- Try
- R(G);CHECK,XS(b)
- Vars
- P(d);XR(G)::B(A)
- Refutation
- B(e);P_SPINP(f),XR(G)
- Try
- R(G);XP(d)
- Vars
- B(e);N_GUARD,P_SPINP(f),XP(F)::QAR1(B),XS(b)
- S(b);N_GUARD::B(A)
- Refutation
- P(g);
- Try
- R(G);CHECK,XB(e)
- Vars
- P(g);SBLOCK,XR(G)::S(J)
- Refutation
- K(c);P-FLIGHT,P_SPINP(f),XR(G)
- Try
- R(I);P_PINB(e),XP(f)
- Threat
- S(J),XP(g)
- Refutation
- P(h);N_SPINB(e),XR(I)
- Try
- P(D);XS(b)
- Threat
- DUALS(2)
- Vars
- P(d);XP(D)::B(A)
- Refutation
- B(e);P_SPINP(f),XP(F)
- Try
- Actual
- S(E);
- Vars
- K(c);P_SPINS(b),S_FLIGHT,XR(G)::B(A)
- K(c);P_SPINB(e),S_FLIGHT,XS(E)::QAR1(B)
- B(e);N_GUARD,P_SPINP(f),XP(F)::S(J),XP(g)
- P(f);P_SPINB(e),SBLOCK,XR(G)::S(E)
- P(f);P_SPINB(e),SBLOCK,XS(E)::S(J),XP(g)
- B(e);N_GUARD,P_SPINP(f)::S(J),XP(g)
- S(b);N_GUARD::B(A),XS(b)
- S(b);N_GUARD::B(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).