MESON Chess Problem Database
Problem Display
PID: 193977 (2q2n1r/4pQ2/r7/p3kB2/b1pR2P1/8/3N3n/b3K1B1 w - - 0 1)
Wilhelm, Joseph A
Pittsburgh Gazette-Times, 1916
#2
7 + 11
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxf5
- 2.Sxc4#
- 2.Qxf5#
- 1...Qb7
- 2.Sxc4#
- 1...Qd7
- 2.Sxc4#
- 1...Qa8
- 2.Sxc4#
- 1...Qb8
- 2.Sxc4#
- 1...Qd8
- 2.Sxc4#
- 1...Qe8
- 2.Sxc4#
- 1...Rd6
- 2.Re4#
- 1...Rf6
- 2.Qd5#
- 1...Ra7
- 2.Qg7#
- 1...Ra8
- 2.Qg7#
- 1...Bc6
- 2.Sxc4#
- 2.Qg7#
- 1...Sf1
- 2.Sf3#
- 1...Sf3+
- 2.Sxf3#
- 1...Sxg4
- 2.Sf3#
- 1...e6
- 2.Qg7#
- 1...Qxf5
- Tries
- 1.Bxh2+?
- 1...Rxh2
- 2.Sf3#
- 1...Kxd4!
- 1...Rxh2
- 1.Bb1?
- threat
- 2.Rd5#
- 1...Sf3+
- 2.Sxf3#
- 1...Qe6
- 2.Qf4#
- 1...Qf5
- 2.Sxc4#
- 2.Qxf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf5#
- 1...Qd7
- 2.Sxc4#
- 1...Qc5
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf5#
- 1...Qd8
- 2.Sxc4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 1...Re6
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Bc6
- 2.Sxc4#
- 1...Se6
- 2.Qf5#
- 1...e6
- 2.Qf4#
- 2.Qg7#
- 1...Bxd4!
- threat
- 1.Bc2?
- threat
- 2.Rd5#
- 1...Sf3+
- 2.Sxf3#
- 1...Qe6
- 2.Qf4#
- 1...Qf5
- 2.Sxc4#
- 2.Qxf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf5#
- 1...Qd7
- 2.Sxc4#
- 1...Qc5
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf5#
- 1...Qd8
- 2.Sxc4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 1...Re6
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Bc6
- 2.Sxc4#
- 1...Se6
- 2.Qf5#
- 1...e6
- 2.Qf4#
- 2.Qg7#
- 1...Bxd4!
- threat
- 1.Bd3?
- threat
- 2.Rd5#
- 1...Sf3+
- 2.Sxf3#
- 1...Qe6
- 2.Qf4#
- 1...Qf5
- 2.Sxc4#
- 2.Qxf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf5#
- 1...Qd7
- 2.Sxc4#
- 1...Qc5
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf5#
- 1...Qd8
- 2.Sxc4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 1...Re6
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Bc6
- 2.Sxc4#
- 1...Se6
- 2.Qf5#
- 1...e6
- 2.Qf4#
- 2.Qg7#
- 1...Bxd4!
- threat
- 1.Be6?
- threat
- 2.Rd5#
- 2.Qf5#
- 1...Sf3+
- 2.Sxf3#
- 1...Qxe6
- 2.Qf4#
- 1...Rxe6
- 2.Qf4#
- 2.Qf5#
- 1...Sxe6
- 2.Qf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf5#
- 1...Qd7
- 2.Sxc4#
- 2.Qf5#
- 1...Qc5
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf5#
- 1...Qd8
- 2.Sxc4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 2.Qf5#
- 1...Rh5
- 2.Rd5#
- 1...Bc2
- 2.Rd5#
- 1...Bc6
- 2.Sxc4#
- 2.Qf5#
- 1...Bxd4!
- threat
- 1.Bg6?
- threat
- 2.Rd5#
- 1...Sf3+
- 2.Sxf3#
- 1...Qe6
- 2.Qf4#
- 1...Qf5
- 2.Sxc4#
- 2.Qxf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf5#
- 1...Qd7
- 2.Sxc4#
- 1...Qc5
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf5#
- 1...Qd8
- 2.Sxc4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 1...Re6
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Bc6
- 2.Sxc4#
- 1...Se6
- 2.Qf5#
- 1...e6
- 2.Qf4#
- 2.Qg7#
- 1...Bxd4!
- threat
- 1.Bd7?
- threat
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...Sf3+
- 2.Sxf3#
- 1...Qxd7
- 2.Sxc4#
- 1...Bxd7
- 2.Rd5#
- 1...Sxd7
- 2.Rd5#
- 2.Qf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf4#
- 2.Qf5#
- 1...Qc5
- 2.Qf4#
- 2.Qf5#
- 1...Qc6
- 2.Qf4#
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 2.Qf4#
- 2.Qf5#
- 1...Re6
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Rh5
- 2.Rd5#
- 2.Qf4#
- 1...Bc2
- 2.Rd5#
- 2.Qf4#
- 1...Bc6
- 2.Sxc4#
- 2.Qf4#
- 2.Qf5#
- 2.Qg7#
- 1...Se6
- 2.Qf5#
- 1...Sg6
- 2.Rd5#
- 2.Qf5#
- 1...e6
- 2.Qf4#
- 2.Qg7#
- 1...Bxd4!
- threat
- 1.Bxc8?
- threat
- 2.Sxc4#
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...Sf3+
- 2.Sxf3#
- 1...Rc6
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...Rd6
- 2.Sxc4#
- 2.Re4#
- 2.Qf4#
- 2.Qf5#
- 1...Re6
- 2.Sxc4#
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Sxc4#
- 2.Qd5#
- 1...Rh5
- 2.Sxc4#
- 2.Rd5#
- 2.Qf4#
- 1...Bc3
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...Bc2
- 2.Sxc4#
- 2.Rd5#
- 2.Qf4#
- 1...Bb3
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...Bb5
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...Bc6
- 2.Sxc4#
- 2.Qf4#
- 2.Qf5#
- 2.Qg7#
- 1...Bd7
- 2.Sxc4#
- 2.Rd5#
- 1...Se6
- 2.Sxc4#
- 2.Qf5#
- 1...Sg6
- 2.Sxc4#
- 2.Rd5#
- 2.Qf5#
- 1...Sd7
- 2.Sxc4#
- 2.Rd5#
- 2.Qf5#
- 1...c3
- 2.Sc4#
- 2.Rd5#
- 2.Qf4#
- 2.Qf5#
- 1...e6
- 2.Sxc4#
- 2.Qf4#
- 2.Qg7#
- 1...Bxd4!
- threat
- 1.Bxh2+?
- Keys
- 1.Bh7!
- threat
- 2.Rd5#
- 1...Sf3+
- 2.Sxf3#
- 1...Bxd4
- 2.Bxh2#
- 1...Qe6
- 2.Qf4#
- 1...Qf5
- 2.Sxc4#
- 2.Qxf5#
- 1...Qb7
- 2.Sxc4#
- 2.Qf5#
- 1...Qd7
- 2.Sxc4#
- 1...Qc5
- 2.Qf5#
- 1...Qc6
- 2.Qf5#
- 1...Qa8
- 2.Sxc4#
- 2.Qf5#
- 1...Qd8
- 2.Sxc4#
- 2.Qf5#
- 1...Rd6
- 2.Re4#
- 1...Re6
- 2.Qf4#
- 2.Qf5#
- 1...Rf6
- 2.Qd5#
- 1...Bc6
- 2.Sxc4#
- 1...Se6
- 2.Qf5#
- 1...e6
- 2.Qf4#
- 2.Qg7#
- threat
- 1.Bh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 10
- Sets
- Q(i);N_GUARD::S(C),XP(d)
- R(g);SBLOCK::R1(D)
- R(g);SBLOCK::QAR1(G)
- R(g);N_GUARD::QAB(G)
- S(b);N_GUARD::S(C)
- S(b);CHECK,N_GUARD::S(C),XS(b)
- S(b);N_GUARD,XP(E)::S(C)
- P(h);S_CUTR(g)::QAB(G)
- Tries
- Try
- B(B);CHECK,XS(b)
- Vars
- R(k);XB(B)::S(C)
- Refutation
- K(f);S_FLIGHT,XR(D)
- Try
- B(F);
- Threat
- R1(D)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Q(i);SBLOCK::QAB1(G)
- Q(i);N_GUARD::S(C),XP(d)
- Q(i);N_GUARD::QAR1(G)
- R(g);SBLOCK::R1(D)
- R(g);SBLOCK::QAR1(G)
- B(c);S_CUTQ(i)::S(C),XP(d)
- S(j);S_CUTQ(i)::QAR1(G)
- Refutation
- B(a);XR(D)
- Try
- B(F);
- Threat
- R1(D)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Q(i);SBLOCK::QAB1(G)
- Q(i);N_GUARD::S(C),XP(d)
- Q(i);N_GUARD::QAR1(G)
- R(g);SBLOCK::R1(D)
- R(g);SBLOCK::QAR1(G)
- B(c);S_CUTQ(i)::S(C),XP(d)
- S(j);S_CUTQ(i)::QAR1(G)
- Refutation
- B(a);XR(D)
- Try
- B(F);
- Threat
- R1(D)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Q(i);SBLOCK::QAB1(G)
- Q(i);N_GUARD::S(C),XP(d)
- Q(i);N_GUARD::QAR1(G)
- R(g);SBLOCK::R1(D)
- R(g);SBLOCK::QAR1(G)
- B(c);S_CUTQ(i)::S(C),XP(d)
- S(j);S_CUTQ(i)::QAR1(G)
- Refutation
- B(a);XR(D)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Q(i);SBLOCK,XB(F)::QAB1(G)
- S(j);XB(F)::QAR1(G)
- Q(i);::QAR1(G)
- R(k);::R1(D)
- B(c);::R1(D)
- Refutation
- B(a);XR(D)
- Try
- B(F);
- Threat
- R1(D)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Q(i);SBLOCK::QAB1(G)
- Q(i);N_GUARD::S(C),XP(d)
- Q(i);N_GUARD::QAR1(G)
- R(g);SBLOCK::R1(D)
- R(g);SBLOCK::QAR1(G)
- B(c);S_CUTQ(i)::S(C),XP(d)
- S(j);S_CUTQ(i)::QAR1(G)
- Refutation
- B(a);XR(D)
- Try
- B(F);
- Threat
- DUALS(3)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Q(i);N_GUARD,XB(F)::S(C),XP(d)
- B(c);XB(F)::R1(D)
- R(g);SBLOCK::QAR1(G)
- S(j);::QAR1(G)
- Refutation
- B(a);XR(D)
- Try
- B(F);XQ(i)
- Threat
- DUALS(4)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- Refutation
- B(a);XR(D)
- Try
- Actual
- B(F);
- Threat
- R1(D)
- Vars
- S(b);CHECK,N_GUARD::S(C),XS(b)
- B(a);SBLOCK,XR(D)::B(B),XS(b)
- Q(i);SBLOCK::QAB1(G)
- Q(i);N_GUARD::S(C),XP(d)
- Q(i);N_GUARD::QAR1(G)
- R(g);SBLOCK::R1(D)
- R(g);SBLOCK::QAR1(G)
- B(c);S_CUTQ(i)::S(C),XP(d)
- S(j);S_CUTQ(i)::QAR1(G)
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).