MESON Chess Problem Database
Problem Display
PID: 179564 (3K2B1/2pppR2/Q1Nb1B2/2pk2rR/2p1rp2/3P1P2/2q3N1/8 w - - 0 1)
Reeves, Alfred Christopher
Problem Observer, 2011
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rxe7#
- 1...Ree5
- 2.Sxf4#
- 1...Rge5
- 2.Rxe7#
- 1...e5
- 2.Rg7#
- 1...e6
- 2.fxe4#
- 1...Rd4
- Tries
- 1.Sxf4+?
- 1...Rxf4
- 2.Rxe7#
- 1...Bxf4!
- 1...Rxf4
- 1.Ba1?
- threat
- 2.Rf5#
- 1...Ke6
- 2.Rf6#
- 1...Be5
- 2.Sxe7#
- 1...Ree5
- 2.Sxf4#
- 1...Rge5
- 2.Rxe7#
- 1...Rf5
- 2.Rfxf5#
- 1...e5
- 2.Rg7#
- 1...e6
- 2.fxe4#
- 1...Re6!
- threat
- 1.Bb2?
- threat
- 2.Rf5#
- 1...Ke6
- 2.Rf6#
- 1...Be5
- 2.Sxe7#
- 1...Ree5
- 2.Sxf4#
- 1...Rge5
- 2.Rxe7#
- 1...Rf5
- 2.Rfxf5#
- 1...e5
- 2.Rg7#
- 1...e6
- 2.fxe4#
- 1...Re6!
- threat
- 1.Rxg5+?
- 1...Ke6
- 2.Rf8#
- 1...Re5
- 2.Sxf4#
- 2.Rxe7#
- 1...e5
- 2.Rxd7#
- 2.Re7#
- 2.Rfg7#
- 2.Rh7#
- 2.Rf8#
- 1...Be5!
- 1...Ke6
- 1.Rg7+?
- 1...e6
- 2.fxe4#
- 1...Re6!
- 1...e6
- 1.Rfh7+?
- 1...e6
- 2.fxe4#
- 1...Re6!
- 1...e6
- 1.Rf8+?
- 1...e6
- 2.fxe4#
- 1...Re6!
- 1...e6
- 1.Sxf4+?
- Keys
- 1.Bc3!
- threat
- 2.Rf5#
- 1...Ke6
- 2.Rf6#
- 1...Be5
- 2.Sxe7#
- 1...Re6
- 2.dxc4#
- 1...Ree5
- 2.Sxf4#
- 1...Rge5
- 2.Rxe7#
- 1...Rf5
- 2.Rfxf5#
- 1...e5
- 2.Rg7#
- 1...e6
- 2.fxe4#
- threat
- 1.Bc3!
This is a version of 174471
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD::B(J)+R(H),XP(k)
- R(c);N_GUARD,N_SPINR(g),S_CUTB(h)::S(A),XP(d)
- R(g);S_CUTR(c)::B(J)+R(H),XP(k)
- P(k);N_GUARD,N_SPINR(g),S_CUTR(c)::B(J)+R(H)
- P(k);SBLOCK::P(C),XR(c)
- Tries
- Try
- S(A);CHECK,XP(d)
- Vars
- R(c);XS(A)::B(J)+R(H),XP(k)
- Refutation
- B(h);XS(A)
- Try
- B(G);
- Threat
- B(J)+R(H),DCHECK
- Vars
- K(f);N_SPINR(g),S_FLIGHT::B(J)+R(H),DCHECK
- B(h);N_GUARD,N_SPINR(g),S_CUTR(c)::S(F),XP(k)
- R(c);N_GUARD,N_SPINR(g),S_CUTB(h)::S(A),XP(d)
- R(g);S_CUTR(c)::B(J)+R(H),XP(k)
- R(g);::B(J)+R(H),DCHECK,XR(g)
- P(k);N_GUARD,N_SPINR(g),S_CUTR(c)::B(J)+R(H)
- P(k);SBLOCK::P(C),XR(c)
- Refutation
- R(c);
- Try
- B(G);
- Threat
- B(J)+R(H),DCHECK
- Vars
- K(f);N_SPINR(g),S_FLIGHT::B(J)+R(H),DCHECK
- B(h);N_GUARD,N_SPINR(g),S_CUTR(c)::S(F),XP(k)
- R(c);N_GUARD,N_SPINR(g),S_CUTB(h)::S(A),XP(d)
- R(g);S_CUTR(c)::B(J)+R(H),XP(k)
- R(g);::B(J)+R(H),DCHECK,XR(g)
- P(k);N_GUARD,N_SPINR(g),S_CUTR(c)::B(J)+R(H)
- P(k);SBLOCK::P(C),XR(c)
- Refutation
- R(c);
- Try
- R(D);CHECK,XR(g)
- Vars
- K(f);S_FLIGHT::B(J)+R(H)
- Refutation
- B(h);P_SPINB(h)
- Try
- R(H);CHECK
- Vars
- P(k);P_SPINP(k)::P(C),XR(c)
- Refutation
- R(c);
- Try
- R(H);CHECK
- Vars
- P(k);P_SPINP(k)::P(C),XR(c)
- Refutation
- R(c);
- Try
- R(H);CHECK
- Vars
- P(k);P_SPINP(k)::P(C),XR(c)
- Refutation
- R(c);
- Try
- Actual
- B(G);
- Threat
- B(J)+R(H),DCHECK
- Vars
- K(f);N_SPINR(g),S_FLIGHT::B(J)+R(H),DCHECK
- B(h);N_GUARD,N_SPINR(g),S_CUTR(c)::S(F),XP(k)
- R(c);N_GUARD,SBLOCK::P(B),XP(b)
- R(c);N_GUARD,N_SPINR(g),S_CUTB(h)::S(A),XP(d)
- R(g);S_CUTR(c)::B(J)+R(H),XP(k)
- R(g);::B(J)+R(H),DCHECK,XR(g)
- P(k);N_GUARD,N_SPINR(g),S_CUTR(c)::B(J)+R(H)
- P(k);SBLOCK::P(C),XR(c)
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).