MESON Chess Problem Database
Problem Display
PID: 64277 (5B2/2K2p1B/3RpP2/1rp2n2/NQN1kp2/2p1P2R/n1P5/8 w - - 0 1)
Nield, Joshua
Chess, 1946
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxb4
- 2.Sxc5#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb7+
- 2.Qxb7#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...Sxb4
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...cxb4
- 2.Rd4#
- 1...e5
- 2.Sd2#
- 1...Rxb4
- Tries
- 1.Kd7?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 1...fxe3!
- 1...Rb7+
- 1.Be7?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 1...fxe3!
- 1...Rb7+
- 1.Bg7?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 1...fxe3!
- 1...Rb7+
- 1.Rd1?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd6#
- 1...fxe3!
- 1...Rb7+
- 1.Rd3?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 2.Sd6#
- 1...fxe3!
- 1...Rb7+
- 1.Rxe6+?
- 1...Kd5
- 2.Re5#
- 1...fxe6!
- 1...Kd5
- 1.Rd7?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 1...fxe3!
- 1...Rb7+
- 1.Rd8?
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 1...fxe3!
- 1...Rb7+
- 1.Qxc3?
- threat
- 2.Sd2#
- 2.Qe5#
- 2.Qd3#
- 1...Sxc3
- 2.Sxc3#
- 1...fxe3
- 2.Qe5#
- 2.Qxe3#
- 1...Rb3
- 2.Sxc5#
- 2.Sd2#
- 2.Qe5#
- 1...Sc1
- 2.Sd2#
- 2.Qe5#
- 1...Sb4
- 2.Sd2#
- 2.Qe5#
- 1...e5
- 2.Sd2#
- 2.Qxe5#
- 2.Qd3#
- 1...Rb7+!
- threat
- 1.Qxb5?
- threat
- 2.Sxc5#
- 2.Qc6#
- 2.Qb7#
- 1...Sb4
- 2.Sxc3#
- 2.Sxc5#
- 1...fxe3!
- threat
- 1.Kd7?
- Keys
- 1.Bh6!
- 1...Rb7+
- 2.Qxb7#
- 1...Rxb4
- 2.Sxc5#
- 1...Sxb4
- 2.Sxc3#
- 1...fxe3
- 2.Rxe3#
- 1...cxb4
- 2.Rd4#
- 1...Ra5
- 2.Qb7#
- 1...Rb6
- 2.Sxc5#
- 1...Rb8
- 2.Sxc5#
- 1...Sc1
- 2.Sxc3#
- 1...f3
- 2.Rh4#
- 1...e5
- 2.Sd2#
- 1...Rb7+
- 1.Bh6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- R(e);CHECK,OGATE::QAB(E),XR(e)
- S(a);N_GUARD::S(D),XP(b)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(f);N_GUARD,XQ(E)::R1(G)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Refutation
- P(d);XP(B)
- Try
- B(K);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Refutation
- P(d);XP(B)
- Try
- B(K);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Refutation
- P(d);XP(B)
- Try
- R(G);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Refutation
- P(d);XP(B)
- Try
- R(G);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- Refutation
- P(d);XP(B)
- Try
- R(G);CHECK,XP(h)
- Vars
- K(c);N_SPINS(g),S_FLIGHT::R1(G)
- Refutation
- P(i);XR(G)
- Try
- R(G);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Refutation
- P(d);XP(B)
- Try
- R(G);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
- Refutation
- P(d);XP(B)
- Try
- Q(E);XP(b)
- Threat
- DUALS(3)
- Vars
- S(a);XQ(E)::S(D),XS(a)
- Refutation
- R(e);CHECK
- Try
- Q(E);XR(e)
- Threat
- DUALS(3)
- Refutation
- P(d);XP(B)
- Try
- Actual
- B(K);
- Vars
- R(e);CHECK,OGATE::QAB(E),XR(e)
- R(e);N_GUARD,XQ(E)::S(D),XP(f)
- S(a);N_GUARD,XQ(E)::S(D),XP(b)
- P(d);OGATE,XP(B)::R1(C),XP(d)
- P(f);N_GUARD,XQ(E)::R1(G)
- R(e);OGATE::QAB(E)
- R(e);N_GUARD::S(D),XP(f)
- S(a);N_GUARD::S(D),XP(b)
- P(d);OGATEB,SBLOCK::R(C)
- P(h);SBLOCK::QAR(E)+S(F),DCHECK
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).