MESON Chess Problem Database
Problem Display
PID: 68288 (3Rb1BN/2r5/1n6/4kP2/1N2npPQ/BpP2r2/1qpP3p/4R1bK w - - 0 1)
Lipton, Michael
Sp. HM., The Problemist Supplement, 2006
#2
12 + 12
| 56 | The Problemist | 2007 |
| 56 | The Problemist | 2008 |
| 23 | Die Schwalbe | 2011 |
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Sd3#
- 1...Rf2
- 2.Sd3#
- 2.d4#
- 1...Rd3
- 2.Sxd3#
- 1...Re3
- 2.d4#
- 1...Rxc3
- 2.Qe7#
- 1...Rc4
- 2.Qe7#
- 1...Rc5
- 2.Qe7#
- 1...Rd7
- 2.Sc6#
- 1...Re7
- 2.Qxe7#
- 1...Rf7
- 2.Sg6#
- 1...Rc8
- 2.Qe7#
- 1...Be3
- 2.Sd3#
- 1...Ba4
- 2.Sg6#
- 1...Bb5
- 2.Sg6#
- 1...Bc6
- 2.Sg6#
- 1...Bg6
- 2.Sxg6#
- 1...Bd7
- 2.Sf7#
- 1...Sa4
- 2.Rd5#
- 1...Sc4
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sd7
- 2.Qe7#
- 1...Sa8
- 2.Rd5#
- 1...Sc8
- 2.Rd5#
- 1...Rf1
- Tries
- 1.Sc6+?
- 1...Bxc6
- 2.Sg6#
- 2.Bd6#
- 1...Rxc6!
- 1...Bxc6
- 1.Sf7+?
- 1...Bxf7
- 2.Qh8#
- 1...Rxf7!
- 1...Bxf7
- 1.Bd5?
- threat
- 2.Rxe4#
- 1...Sxd5
- 2.Rxd5#
- 1...Bd7
- 2.Sf7#
- 1...Sd7
- 2.Qe7#
- 1...Re3
- 2.d4#
- 1...Rc4
- 2.Qe7#
- 1...Be3
- 2.Sd3#
- 1...Rd7!
- threat
- 1.Re3?
- threat
- 2.Sd3#
- 2.d4#
- 1...Rxe3
- 2.d4#
- 1...Rxc3
- 2.Qe7#
- 2.d4#
- 1...Bxe3
- 2.Sd3#
- 1...fxe3
- 2.Sd3#
- 1...Rd7
- 2.Sc6#
- 1...Bd7
- 2.Sd3#
- 2.Sf7#
- 1...Sd7
- 2.Sd3#
- 2.Qe7#
- 1...c1S
- 2.d4#
- 1...Rc4
- 2.Sd3#
- 2.Qe7#
- 1...Bb5
- 2.Sg6#
- 2.d4#
- 1...Qxc3!
- threat
- 1.Rd6?
- threat
- 2.Re6#
- 2.Qf6#
- 1...Qxc3
- 2.Qf6#
- 1...Rfxc3
- 2.Qf6#
- 1...Rcxc3
- 2.Qf6#
- 2.Qe7#
- 1...Re3
- 2.Re6#
- 1...Rc6
- 2.Qf6#
- 2.Qe7#
- 1...Re7
- 2.Qf6#
- 2.Qxe7#
- 1...Rf7
- 2.Re6#
- 1...Be3
- 2.Sd3#
- 2.Re6#
- 1...Bd7
- 2.Sf7#
- 2.Qf6#
- 1...Bf7
- 2.Qf6#
- 1...Sd5
- 2.Rxd5#
- 2.Re6#
- 1...Sd7
- 2.Rd5#
- 2.Re6#
- 2.Qe7#
- 1...Kxd6!
- threat
- 1.Rd7?
- threat
- 2.Qe7#
- 1...Rxd7
- 2.Sc6#
- 1...Bxd7
- 2.Sf7#
- 1...Rc6
- 2.Sxc6#
- 1...Bf7
- 2.Sxf7#
- 1...Sd5
- 2.Rxd5#
- 1...Sc8
- 2.Rd5#
- 1...Bc5!
- threat
- 1.Rxe8+?
- 1...Re7
- 2.Sc6#
- 2.Sf7#
- 2.Qxe7#
- 1...Kd6!
- 1...Re7
- 1.d3?
- threat
- 2.Rxe4#
- 1...Rxd3
- 2.Sxd3#
- 1...Rd7
- 2.Sc6#
- 1...Bd7
- 2.Sf7#
- 1...Sd7
- 2.Qe7#
- 1...Re3
- 2.d4#
- 1...Rc4
- 2.Qe7#
- 1...Bc6
- 2.Sg6#
- 1...Be3!
- threat
- 1.Sc6+?
- Keys
- 1.Qg5!
- threat
- 2.f6#
- 1...Rd7
- 2.Sc6#
- 1...Bd7
- 2.Sf7#
- 1...Sd7
- 2.Qe7#
- 1...Re3
- 2.d4#
- 1...Rf7
- 2.Sg6#
- 1...Rg7
- 2.Qxg7#
- 1...Be3
- 2.Sd3#
- 1...Bg6
- 2.Sxg6#
- 2.fxg6#
- 1...Bf7
- 2.Qg7#
- threat
- 1.Qg5!
This is after 6349
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 16
- Sets
- R(f);N_GUARD::S(F)
- R(f);N_GUARD::S(F),XR(f)
- R(f);N_SPINS(g),S_CUTB(a)::P(C)
- R(k);N_GUARD,XP(E)::QAR2(H)
- R(k);N_GUARD::QAR2(H)
- R(k);N_GUARD,S_CUTB(l)::S(F)
- R(k);N_GUARD::QAR2(H),XR(k)
- R(k);S_CUTB(l)::S(L)
- B(a);N_SPINS(g),S_CUTR(f)::S(F)
- B(l);N_GUARD::S(L)
- B(l);N_GUARD::S(L),XB(l)
- B(l);N_GUARD,S_CUTR(k)::S(L)
- S(j);N_GUARD::R1(J)
- S(j);N_GUARD::R1(J),XS(j)
- S(j);S_CUTR(k)::QAR2(H)
- Tries
- Try
- S(F);CHECK
- Refutation
- R(k);XS(F)
- Try
- S(L);CHECK
- Vars
- B(l);XS(L)::QAB(H)
- Refutation
- R(k);XS(L)
- Try
- B(K);
- Threat
- R1(A),XS(g)
- Vars
- S(j);OGATE,XB(K)::R1(J),XS(j)
- B(l);N_GUARD,S_CUTR(k)::S(L)
- S(j);S_CUTR(k)::QAR2(H)
- R(f);N_SPINS(g),S_CUTB(a)::P(C)
- R(k);N_GUARD::QAR2(H)
- B(a);N_SPINS(g),S_CUTR(f)::S(F)
- Refutation
- R(k);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(f);N_SPINS(g),XR(A)::P(C)
- B(a);N_SPINS(g),XR(A)::S(F)
- P(h);N_SPINS(g),XR(A)::S(F)
- R(k);N_GUARD,S_CUTB(l)::S(F)
- P(c);::P(C)
- Refutation
- Q(b);XP(E)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(E)::QAB1(H)
- R(f);XP(E)::QAB1(H)
- R(f);N_SPINS(g)::R1(J)
- R(k);::R1(J)
- B(l);::QAB1(H)
- Refutation
- K(i);N_SPINS(g),S_FLIGHT,XR(J)
- Try
- R(J);
- Threat
- QAR2(H)
- Vars
- R(k);N_GUARD,XR(J)::S(F)
- B(l);N_GUARD,XR(J)::S(L)
- R(k);N_GUARD::S(F),XR(k)
- B(l);N_GUARD::S(L),XB(l)
- S(j);N_GUARD::R1(J),XS(j)
- S(j);N_GUARD::R1(J)
- Refutation
- B(a);
- Try
- R(J);CHECK,XB(l)
- Refutation
- K(i);N_SPINS(g),S_FLIGHT
- Try
- P(C);
- Threat
- R1(A),XS(g)
- Vars
- R(f);XP(C)::S(F),XR(f)
- R(k);N_GUARD,S_CUTB(l)::S(F)
- B(l);N_GUARD,S_CUTR(k)::S(L)
- S(j);S_CUTR(k)::QAR2(H)
- R(f);N_SPINS(g),S_CUTB(a)::P(C)
- R(k);N_GUARD::QAR2(H)
- B(l);N_GUARD::S(L)
- Refutation
- B(a);N_SPINS(g)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)+P(I)
- Vars
- R(k);N_GUARD,S_CUTB(l)::S(F)
- B(l);N_GUARD,S_CUTR(k)::S(L)
- S(j);S_CUTR(k)::QAR2(H)
- R(f);N_SPINS(g),S_CUTB(a)::P(C)
- R(k);S_CUTB(l)::S(L)
- R(k);N_GUARD::QAB(H),XR(k)
- B(a);N_SPINS(g),S_CUTR(f)::S(F)
- B(l);S_CUTR(k)::QAB(H)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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