MESON Chess Problem Database
Problem Display
PID: 223364 (q1RKRn2/N2B2N1/1P1k1P2/2ppp2b/1r3r2/3Q2p1/3Bp2b/3n4 w - - 0 1)
Woerner, William F
St. Louis Globe Democrat, 1885
#2
10 + 13
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Rxc6#
- 1...Qxa7
- 2.Rc6#
- 1...Qxc8+
- 2.Sxc8#
- 1...Ra4
- 2.Sb5#
- 1...Rbc4
- 2.Sb5#
- 1...Rbd4
- 2.Sb5#
- 1...Rbe4
- 2.Sb5#
- 1...Rb5
- 2.Sxb5#
- 1...Rfc4
- 2.Sf5#
- 1...Rfd4
- 2.Sf5#
- 1...Rfe4
- 2.Sf5#
- 1...Rg4
- 2.Sf5#
- 1...Rh4
- 2.Sf5#
- 1...Rf5
- 2.Sxf5#
- 1...Bxe8
- 2.Sxe8#
- 1...Se6+
- 2.Rxe6#
- 1...Sg6
- 2.Re6#
- 1...Sxd7
- 2.Re6#
- 1...Sh7
- 2.Re6#
- 1...c4
- 2.Bxb4#
- 1...e4
- 2.Bxf4#
- 1...Qc6
- Tries
- 1.Bxb4?
- threat
- 2.Sb5#
- 2.Bxc5#
- 1...Qxc8+
- 2.Sxc8#
- 1...Se6+
- 2.Rxe6#
- 1...Qxa7
- 2.Bxc5#
- 2.Rc6#
- 1...Rxb4
- 2.Sf5#
- 1...Sxd7
- 2.Sb5#
- 2.Re6#
- 1...cxb4
- 2.Sb5#
- 1...Qc6
- 2.Rxc6#
- 1...Rc4
- 2.Sb5#
- 2.Sf5#
- 1...Bg1
- 2.Sb5#
- 1...Sc3
- 2.Bxc5#
- 1...d4!
- threat
- 1.Bxf4?
- threat
- 2.Sf5#
- 2.Bxe5#
- 1...Qxc8+
- 2.Sxc8#
- 1...Se6+
- 2.Rxe6#
- 1...Rxf4
- 2.Sb5#
- 1...Bxe8
- 2.Sf5#
- 2.Sxe8#
- 1...Sxd7
- 2.Sf5#
- 2.Re6#
- 1...exf4
- 2.Sf5#
- 1...e1Q
- 2.Sf5#
- 1...e1R
- 2.Sf5#
- 1...Re4
- 2.Sb5#
- 2.Sf5#
- 1...Bg4
- 2.Bxe5#
- 1...Bg6
- 2.Bxe5#
- 1...Se3
- 2.Bxe5#
- 1...Sg6
- 2.Sf5#
- 2.Re6#
- 1...g2
- 2.Sf5#
- 1...d4!
- threat
- 1.Rxa8?
- threat
- 2.Sc8#
- 1...Se6+
- 2.Rxe6#
- 1...Sxd7
- 2.Re6#
- 1...c4
- 2.Bxb4#
- 1...d4!
- threat
- 1.Qc3?
- threat
- 2.Qxe5#
- 2.Qxc5#
- 1...Qxc8+
- 2.Sxc8#
- 1...Se6+
- 2.Rxe6#
- 1...Bxe8
- 2.Sxe8#
- 2.Qxc5#
- 1...Sxd7
- 2.Re6#
- 1...d4
- 2.Qxc5#
- 1...e1Q
- 2.Qxc5#
- 1...e1R
- 2.Qxc5#
- 1...Bg1
- 2.Qxe5#
- 1...Qc6
- 2.Rxc6#
- 2.Qxe5#
- 1...Rbc4
- 2.Sb5#
- 2.Qxe5#
- 1...Rbd4
- 2.Sb5#
- 2.Qxc5#
- 1...Rbe4
- 2.Sb5#
- 2.Qxc5#
- 1...Rb5
- 2.Sxb5#
- 2.Qxe5#
- 1...Rfc4
- 2.Sf5#
- 2.Qxe5#
- 1...Rfd4
- 2.Sf5#
- 2.Qxc5#
- 1...Rfe4
- 2.Sf5#
- 2.Qxc5#
- 1...Rf5
- 2.Sxf5#
- 2.Qxc5#
- 1...Sg6
- 2.Re6#
- 2.Qxc5#
- 1...c4
- 2.Qxb4#
- 2.Qxe5#
- 1...e4
- 2.Bxf4#
- 2.Qe5#
- 2.Qxc5#
- 1...Sxc3!
- threat
- 1.Qe3?
- threat
- 2.Qxc5#
- 2.Qxe5#
- 1...Qxc8+
- 2.Sxc8#
- 1...Se6+
- 2.Rxe6#
- 1...Bxe8
- 2.Sxe8#
- 2.Qxc5#
- 1...Sxd7
- 2.Re6#
- 1...d4
- 2.Qxe5#
- 1...e1Q
- 2.Qxc5#
- 1...e1R
- 2.Qxc5#
- 1...Bg1
- 2.Qxe5#
- 1...Qc6
- 2.Rxc6#
- 2.Qxe5#
- 1...Rbc4
- 2.Sb5#
- 2.Qxe5#
- 1...Rbd4
- 2.Sb5#
- 2.Qxe5#
- 1...Rbe4
- 2.Sb5#
- 2.Qxc5#
- 1...Rb5
- 2.Sxb5#
- 2.Qxe5#
- 1...Rfc4
- 2.Sf5#
- 2.Qxe5#
- 1...Rfd4
- 2.Sf5#
- 2.Qxe5#
- 1...Rfe4
- 2.Sf5#
- 2.Qxc5#
- 1...Rf5
- 2.Sxf5#
- 2.Qxc5#
- 1...Sg6
- 2.Re6#
- 2.Qxc5#
- 1...c4
- 2.Bxb4#
- 2.Qc5#
- 2.Qxe5#
- 1...e4
- 2.Qxf4#
- 2.Qxc5#
- 1...Sxe3!
- threat
- 1.Bxb4?
- Keys
- 1.Qd4!
- threat
- 2.Qxc5#
- 2.Qxe5#
- 1...Qxc8+
- 2.Sxc8#
- 1...Se6+
- 2.Rxe6#
- 1...Rbxd4
- 2.Sb5#
- 1...Rfxd4
- 2.Sf5#
- 1...Bxe8
- 2.Sxe8#
- 2.Qxc5#
- 1...Sxd7
- 2.Re6#
- 1...cxd4
- 2.Bxb4#
- 1...exd4
- 2.Bxf4#
- 1...e1Q
- 2.Qxc5#
- 1...e1R
- 2.Qxc5#
- 1...Bg1
- 2.Qxe5#
- 1...Qc6
- 2.Rxc6#
- 2.Qxe5#
- 1...Rc4
- 2.Sb5#
- 2.Qxe5#
- 1...Rb5
- 2.Sxb5#
- 2.Qxe5#
- 1...Re4
- 2.Sf5#
- 2.Qxc5#
- 1...Rf5
- 2.Sxf5#
- 2.Qxc5#
- 1...Sg6
- 2.Re6#
- 2.Qxc5#
- 1...c4
- 2.Bxb4#
- 2.Qc5#
- 2.Qxe5#
- 1...e4
- 2.Bxf4#
- 2.Qxc5#
- 2.Qe5#
- threat
- 1.Qd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 16
- Sets
- Q(l);N_PINR(H)::R1(H),XQ(l)
- Q(l);N_PINR(H),XS(E)::R1(H)
- Q(l);CHECK,XR(H)::S(E),XQ(l)
- R(e);N_GUARD::S(E)
- R(e);N_GUARD,N_SPINP(h)::S(E)
- R(e);N_GUARD::S(E),XR(e)
- R(f);N_GUARD::S(G)
- R(f);N_GUARD,N_SPINP(h)::S(G)
- R(f);N_GUARD::S(G),XR(f)
- B(j);XR(J)::S(G),XB(j)
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- S(m);N_GUARD::R1(J)
- S(m);N_GUARD,XB(F)::R1(J)
- P(g);OGATEB::B(A),XR(e)
- P(i);OGATEB::B(A),XR(f)
- Tries
- Try
- B(A);N_PINP(h),P_PINP(g),XR(e)
- Threat
- DUALS(2)
- Vars
- Q(l);CHECK,XR(H)::S(E),XQ(l)
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- R(f);N_GUARD,N_SPINP(g),P_SPINP(h),XB(A)::S(G)
- P(g);N_SPINP(g),P_SPINP(h),XB(A)::S(E)
- Q(l);N_PINR(H)::R1(H),XQ(l)
- B(c);::S(E)
- S(a);::B(A),XP(g)
- Refutation
- P(h);N_SPINP(g),P_SPINP(h)
- Try
- B(A);XR(f)
- Threat
- DUALS(2)
- Vars
- Q(l);CHECK,XR(H)::S(E),XQ(l)
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- R(e);N_GUARD,XB(A)::S(E)
- P(i);XB(A)::S(G)
- P(b);::S(G)
- B(j);::B(A),XP(i)
- S(a);::B(A),XP(i)
- P(d);::S(G)
- Refutation
- P(h);
- Try
- R(H);N_SPINR(H),XQ(l)
- Threat
- S(E)
- Vars
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- S(m);N_GUARD,XB(F)::R1(J)
- P(g);OGATEB::B(A),XR(e)
- Refutation
- P(h);
- Try
- Q(B);N_PINP(h)
- Threat
- DUALS(2)
- Vars
- Q(l);CHECK,XR(H)::S(E),XQ(l)
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- S(m);N_GUARD,XB(F)::R1(J)
- P(h);::QAB1(B),XP(g)
- P(b);::QAB1(B),XP(g)
- B(c);::QAB1(B),XP(i)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);N_PINP(h)
- Threat
- DUALS(2)
- Vars
- Q(l);CHECK,XR(H)::S(E),XQ(l)
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- S(m);N_GUARD,XB(F)::R1(J)
- P(h);::QAB1(B),XP(i)
- P(b);::QAB1(B),XP(g)
- B(c);::QAB1(B),XP(i)
- Refutation
- S(a);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(l);CHECK,XR(H)::S(E),XQ(l)
- S(m);CHECK,N_GUARD::R1(J),XS(m)
- R(e);N_GUARD,N_SPINP(h),XQ(B)::S(E)
- R(f);N_GUARD,N_SPINP(h),XQ(B)::S(G)
- S(m);N_GUARD,XB(F)::R1(J)
- P(g);N_SPINP(h),OGATEB,XQ(B)::B(A),XR(e)
- P(i);N_SPINP(h),OGATEB,XQ(B)::B(A),XR(f)
- P(b);::QAB1(B),XP(g)
- B(c);::QAB1(B),XP(i)
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).