MESON Chess Problem Database
Problem Display
PID: 193665 (qbQ5/P7/N2pp3/KP1k1p2/PP3B1n/2PP4/b7/3B4 w - - 0 1)
Woodard, Eugene
Pittsburgh Gazette-Times, 1915
#2
11 + 8
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qxa7
- 2.Qc6#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bb3
- 2.Bxb3#
- 1...Bc4
- 2.Qxc4#
- 1...Bxa7
- 2.Sc7#
- 2.Qxa8#
- 1...Bc7+
- 2.Sxc7#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...Qc6
- Tries
- 1.Sxb8?
- 1...Qxb8
- 2.Qc6#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bb3
- 2.Bxb3#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...Qxa7+!
- 1...Qxb8
- 1.Be2?
- 1...Bc7+
- 2.Sxc7#
- 1...Qxa7
- 2.Qc6#
- 1...Bxa7
- 2.Sc7#
- 2.Qxa8#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...Bb3!
- 1...Bc7+
- 1.Bh5?
- 1...Bc7+
- 2.Sxc7#
- 1...Qxa7
- 2.Qc6#
- 1...Bxa7
- 2.Sc7#
- 2.Qxa8#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Bf7#
- 2.Qg8#
- 1...Bb3!
- 1...Bc7+
- 1.Bh2?
- 1...Bc7+
- 2.Sxc7#
- 1...Qxa7
- 2.Qc6#
- 1...Bxa7
- 2.Sc7#
- 2.Qxa8#
- 1...Bb3
- 2.Bxb3#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...f4!
- 1...Bc7+
- 1.Bg3?
- 1...Bc7+
- 2.Sxc7#
- 1...Qxa7
- 2.Qc6#
- 1...Bxa7
- 2.Sc7#
- 2.Qxa8#
- 1...Bb3
- 2.Bxb3#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...f4!
- 1...Bc7+
- 1.Qd7?
- 1...Bc7+
- 2.Sxc7#
- 1...Qxa7
- 2.Qc6#
- 1...Bxa7
- 2.Sc7#
- 2.Qxd6#
- 1...Bb3
- 2.Bxb3#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Bb3#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qf7#
- 1...Bc4!
- 1...Bc7+
- 1.Qh8?
- threat
- 2.Qd4#
- 1...Bc7+
- 2.Sxc7#
- 1...Bxa7
- 2.Sc7#
- 2.Qxa8#
- 1...e5
- 2.Qg8#
- 1...Sf3
- 2.Bxf3#
- 1...Qxa7!
- threat
- 1.c4+?
- 1...Bxc4
- 2.Qxc4#
- 1...Kd4!
- 1...Bxc4
- 1.axb8Q?
- threat
- 2.Qxd6#
- 2.Qxa8#
- 1...Qxb8
- 2.Qc6#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxd6#
- 2.Qcxb7#
- 2.Qbxb7#
- 1...Qa7
- 2.Qxd6#
- 2.Qc6#
- 1...e5
- 2.Qxa8#
- 2.Qg8#
- 1...Qxa6+!
- threat
- 1.axb8S?
- 1...Qxb8
- 2.Qc6#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7
- 2.Qc6#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bb3
- 2.Bxb3#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...Qxa6+!
- 1...Qxb8
- 1.axb8B?
- 1...Qxb8
- 2.Qc6#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7
- 2.Qc6#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bb3
- 2.Bxb3#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...Qxa6+!
- 1...Qxb8
- 1.axb8R?
- 1...Qxb8
- 2.Qc6#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Qa7
- 2.Qc6#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bb3
- 2.Bxb3#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...e5
- 2.Qg8#
- 1...Qxa6+!
- 1...Qxb8
- 1.Sxb8?
- Keys
- 1.Qc7!
- 1...Bxc7+
- 2.Sxc7#
- 1...Qxa7
- 2.Qc6#
- 1...Bxa7
- 2.Qxd6#
- 1...e5
- 2.Qf7#
- 1...Bb3
- 2.Bxb3#
- 1...Qc6
- 2.Qxc6#
- 1...Qb7
- 2.Qxb7#
- 1...Bb1
- 2.Bb3#
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Sg2
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Sg6
- 2.Bf3#
- 1...Bxc7+
- 1.Qc7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- B(h);CHECK,N_GUARD::S(I),XB(h)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Tries
- Try
- S(I);P_SPINP(J),XB(h)
- Vars
- Q(g);N_GUARD,N_PINP(J),XS(I)::QAB1(K)
- Q(g);N_GUARD,N_PINP(J)::QAB1(K),XQ(g)
- Q(g);N_GUARD,N_PINP(J)::QAB(K),XQ(g)
- B(a);N_GUARD::B(A),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- Q(g);CHECK,XP(J)
- Try
- B(A);
- Vars
- B(h);CHECK,N_GUARD::S(I),XB(h)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- B(a);N_GUARD::QAB1(K)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- B(a);
- Try
- B(A);
- Vars
- B(h);CHECK,N_GUARD::S(I),XB(h)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- B(a);N_GUARD::QAB1(K)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- Refutation
- B(a);
- Try
- B(F);
- Vars
- B(h);CHECK,N_GUARD::S(I),XB(h)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- P(d);
- Try
- B(F);
- Vars
- B(h);CHECK,N_GUARD::S(I),XB(h)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- P(d);
- Try
- Q(K);P_PINP(e)
- Vars
- B(h);CHECK,N_GUARD::S(I),XB(h)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- B(a);N_GUARD::B(A)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- B(a);
- Try
- Q(K);
- Threat
- QAR1(K)
- Vars
- B(h);CHECK,N_GUARD::S(I),XB(h)
- P(f);OGATEB::QAB(K)
- S(b);N_GUARD::B(A),XS(b)
- Refutation
- Q(g);P_PINS(I),XP(J)
- Try
- P(B);CHECK
- Vars
- B(a);OGATE,XP(B)::QAB1(K),XB(a)
- Refutation
- K(c);P-FLIGHT
- Try
- P(J);P_SPINS(I),XB(h)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD,N_PINS(I),XQ(J)::QAB1(K)
- Q(g);N_GUARD,N_PINS(I)::QAB1(K),XQ(g)
- Refutation
- Q(g);CHECK,XS(I)
- Try
- P(J);P_SPINS(I),XB(h)
- Vars
- Q(g);N_GUARD,N_PINS(I),XS(J)::QAB1(K)
- Q(g);N_GUARD,N_PINS(I)::QAB1(K),XQ(g)
- Q(g);N_GUARD,N_PINS(I)::QAB(K),XQ(g)
- Q(g);N_GUARD::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- Q(g);CHECK,XS(I)
- Try
- P(J);P_SPINS(I),XB(h)
- Vars
- Q(g);N_GUARD,N_PINS(I),XB(J)::QAB1(K)
- Q(g);N_GUARD,N_PINS(I)::QAB1(K),XQ(g)
- Q(g);N_GUARD,N_PINS(I)::QAB(K),XQ(g)
- Q(g);N_GUARD::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- Q(g);CHECK,XS(I)
- Try
- P(J);P_SPINS(I),XB(h)
- Vars
- Q(g);N_GUARD,N_PINS(I),XR(J)::QAB1(K)
- Q(g);N_GUARD,N_PINS(I)::QAB1(K),XQ(g)
- Q(g);N_GUARD,N_PINS(I)::QAB(K),XQ(g)
- Q(g);N_GUARD::QAB1(K)
- B(a);N_GUARD::B(A),XB(a)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);OGATEB::QAB(K)
- Refutation
- Q(g);CHECK,XS(I)
- Try
- Actual
- Q(K);
- Vars
- B(h);CHECK,XQ(K)::S(I),XB(h)
- Q(g);N_GUARD,P_PINS(I),XP(J)::QAB1(K)
- B(h);N_GUARD,XP(J)::QAR1(K),XP(e)
- P(f);OGATEB::QAB(K)
- B(a);N_GUARD::B(A),XB(a)
- Q(g);N_GUARD::QAB1(K),XQ(g)
- Q(g);N_GUARD::QAB(K),XQ(g)
- B(a);N_GUARD::QAB1(K),XB(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
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).