MESON Chess Problem Database
Problem Display
PID: 154837 (7b/BP6/q1P2PB1/2pPP2R/pN3k2/2n4K/2Nnp1Pp/4r2r w - - 0 1)
Williams, Philip Hamilton
BCF, 1907
#2
12 + 11
| 15351 | SCPF/BCPS Black Books | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qd3+
- 2.Sxd3#
- 1...Qxb7
- 2.Sd3#
- 1...Qa5
- 2.Sd3#
- 1...Qb6
- 2.Sd3#
- 1...Qxc6
- 2.Sd3#
- 1...Qxa7
- 2.Sd3#
- 1...Sf3
- 2.g3#
- 1...Sc4
- 2.Sd3#
- 1...Sde4
- 2.Rf5#
- 1...Sce4
- 2.Rf5#
- 1...Sb5
- 2.Sd3#
- 1...Sxd5
- 2.Sxd5#
- 1...cxb4
- 2.Be3#
- 1...c4
- 2.Be3#
- 1...Qd3+
- Tries
- 1.e6?
- threat
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Qd3+
- 2.Sxd3#
- 1...Qxb7
- 2.Sd3#
- 1...Qxc6
- 2.Sd3#
- 1...Qxa7
- 2.Sd3#
- 1...Sxd5
- 2.Sxd5#
- 1...cxb4
- 2.Be3#
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Qc4
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Qb5
- 2.Bb8#
- 1...Qa5
- 2.Sd3#
- 1...Qb6
- 2.Sd3#
- 1...Ra1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Rb1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Rc1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Rd1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Ref1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Reg1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Rhf1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Rhg1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Bg7
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sdb1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sf1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sb3
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sf3
- 2.g3#
- 1...Sc4
- 2.Sd3#
- 1...Sde4
- 2.Rf5#
- 1...Scb1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sd1
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sa2
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Sce4
- 2.Rf5#
- 1...Sb5
- 2.Sd3#
- 1...a3
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...c4
- 2.Be3#
- 2.Bb8#
- 2.b8Q#
- 2.b8B#
- 1...Bxf6!
- threat
- 1.e6?
- Keys
- 1.Bb8!
- threat
- 2.e6#
- 1...Qd3+
- 2.Sxd3#
- 1...Qxb7
- 2.Sd3#
- 1...Qxc6
- 2.Sd3#
- 1...Bxf6
- 2.exf6#
- 1...Sxd5
- 2.Sxd5#
- 1...Qa5
- 2.Sd3#
- 1...Qb6
- 2.Sd3#
- 1...Qa7
- 2.Sd3#
- 1...Qa8
- 2.Sd3#
- 1...Sf3
- 2.g3#
- 1...Sc4
- 2.Sd3#
- 1...Sde4
- 2.Rf5#
- 1...Sce4
- 2.Rf5#
- 1...Sb5
- 2.Sd3#
- threat
- 1.Bb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(j);CHECK,N_GUARD::S(D),XQ(j)
- Q(j);N_GUARD,XP(L)::S(D)
- Q(j);N_GUARD::S(D)
- Q(j);N_GUARD,XP(H)::S(D)
- Q(j);N_GUARD,XB(K)::S(D)
- S(c);SBLOCK::P(B)
- S(c);S_CUTQ(j)::S(D)
- S(c);SBLOCK::R1(G)
- S(f);SBLOCK::R1(G)
- S(f);S_CUTQ(j)::S(D)
- S(f);XP(E)::S(D),XS(f)
- P(i);OGATE,XS(D)::B(K)
- P(i);OGATE::B(K)
- Tries
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- Q(j);CHECK,N_GUARD::S(D),XQ(j)
- Q(j);N_GUARD,XP(L)::S(D)
- Q(j);N_GUARD,XP(H)::S(D)
- Q(j);N_GUARD,XB(K)::S(D)
- S(f);XP(E)::S(D),XS(f)
- Q(j);::B(K)
- Q(j);N_GUARD::S(D)
- S(c);SBLOCK::P(B)
- S(c);S_CUTQ(j)::S(D)
- S(c);SBLOCK::R1(G)
- S(f);SBLOCK::R1(G)
- S(f);S_CUTQ(j)::S(D)
- Refutation
- B(k);XP(I)
- Try
- Actual
- B(K);
- Threat
- B(K)+P(F)
- Vars
- Q(j);CHECK,N_GUARD::S(D),XQ(j)
- Q(j);N_GUARD,XP(L)::S(D)
- Q(j);N_GUARD,XP(H)::S(D)
- B(k);OGATE,XP(I)::B(K)+P(F),XB(k)
- S(f);XP(E)::S(D),XS(f)
- Q(j);N_GUARD::S(D)
- S(c);SBLOCK::P(B)
- S(c);S_CUTQ(j)::S(D)
- S(c);SBLOCK::R1(G)
- S(f);SBLOCK::R1(G)
- S(f);S_CUTQ(j)::S(D)
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).