MESON Chess Problem Database
Problem Display
PID: 190148 (6n1/8/1b6/1N2Bb2/1RB1k3/1K2ppP1/2Pr4/Q7 w - - 0 1)
Windle, REL
The San Francisco Call, 1913
#2
8 + 7
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Sd6#
- 1...Re2
- 2.Sd6#
- 1...Rf2
- 2.Sd6#
- 1...Rg2
- 2.Sd6#
- 1...Rh2
- 2.Sd6#
- 1...Rd3+
- 2.cxd3#
- 1...Rd5
- 2.Bd3#
- 1...Rd6
- 2.Sxd6#
- 1...Rxc2
- Tries
- 1.Bf4?
- threat
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Bd3#
- 1...Bd4
- 2.Sd6#
- 2.Qa8#
- 1...Bc7!
- threat
- 1.Bf6?
- threat
- 2.Sc3#
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...Rxc2
- 2.Sd6#
- 2.Qe5#
- 2.Qa8#
- 1...Bh3
- 2.Qe5#
- 1...Bg4
- 2.Qe5#
- 1...Be6
- 2.Qe5#
- 1...Bg6
- 2.Qe5#
- 1...Bd7
- 2.Qe5#
- 1...Bh7
- 2.Qe5#
- 1...Bc8
- 2.Qe5#
- 1...e2
- 2.Qe5#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Sc3#
- 2.Bd3#
- 1...Bd4
- 2.Sd6#
- 2.Qa8#
- 1...Bc7
- 2.Sc3#
- 1...Sxf6!
- threat
- 1.Bc7?
- threat
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Bd3#
- 1...Rd6
- 2.Sxd6#
- 1...Bd4
- 2.Qa8#
- 1...Bxc7!
- threat
- 1.Bg7?
- threat
- 2.Sc3#
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...Rxc2
- 2.Sd6#
- 2.Qe5#
- 2.Qa8#
- 1...Bh3
- 2.Qe5#
- 1...Bg4
- 2.Qe5#
- 1...Be6
- 2.Qe5#
- 1...Bg6
- 2.Qe5#
- 1...Bd7
- 2.Qe5#
- 1...Bh7
- 2.Qe5#
- 1...Bc8
- 2.Qe5#
- 1...e2
- 2.Qe5#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Sc3#
- 2.Bd3#
- 1...Bd4
- 2.Sd6#
- 2.Qa8#
- 1...Bc7
- 2.Sc3#
- 1...Sf6!
- threat
- 1.Bb8?
- threat
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Bd3#
- 1...Rd6
- 2.Sxd6#
- 1...Bd4
- 2.Qa8#
- 1...Bc7!
- threat
- 1.Bh8?
- threat
- 2.Sc3#
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...Rxc2
- 2.Sd6#
- 2.Qe5#
- 2.Qa8#
- 1...Bh3
- 2.Qe5#
- 1...Bg4
- 2.Qe5#
- 1...Be6
- 2.Qe5#
- 1...Bg6
- 2.Qe5#
- 1...Bd7
- 2.Qe5#
- 1...Bh7
- 2.Qe5#
- 1...Bc8
- 2.Qe5#
- 1...e2
- 2.Qe5#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Sc3#
- 2.Bd3#
- 1...Bd4
- 2.Sd6#
- 2.Qa8#
- 1...Bc7
- 2.Sc3#
- 1...Sf6!
- threat
- 1.Qa8+?
- 1...Rd5
- 2.Qxd5#
- 1...Kxe5!
- 1...Rd5
- 1.Bf4?
- Keys
- 1.Bd6!
- threat
- 2.Qe5#
- 1...Rd3+
- 2.cxd3#
- 1...Rxd6
- 2.Sxd6#
- 1...f2
- 2.Qh1#
- 1...Rd4
- 2.Sc3#
- 1...Rd5
- 2.Bd3#
- 1...Bd4
- 2.Qa8#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(a);N_GUARD,XP(B)::S(G)
- R(a);N_GUARD::S(G)
- R(a);CHECK,OGATE::P(B),XR(a)
- R(a);SBLOCK::R(E)+B(F),DCHECK
- R(a);N_GUARD::S(G),XR(a)
- Tries
- Try
- B(H);
- Threat
- QAR1(A)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- P(c);OGATEB::QAB(A)
- R(a);SBLOCK::S(G)
- R(a);SBLOCK::R(E)+B(F),DCHECK
- Refutation
- B(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- B(e);::QAR1(A)
- B(e);P_PINB(F)::QAR1(A)
- P(b);::QAR1(A)
- P(c);OGATEB::QAB(A)
- R(a);::S(G)
- B(f);::S(G)
- Refutation
- S(g);XB(H)
- Try
- B(H);
- Threat
- QAR1(A)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- P(c);OGATEB::QAB(A)
- R(a);SBLOCK::S(G)
- R(a);SBLOCK::R(E)+B(F),DCHECK
- R(a);N_GUARD::S(G),XR(a)
- B(f);S_CUTR(a)::QAB(A)
- Refutation
- B(f);XB(H)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- B(e);::QAR1(A)
- B(e);P_PINB(F)::QAR1(A)
- P(b);::QAR1(A)
- P(c);OGATEB::QAB(A)
- R(a);::S(G)
- B(f);::S(G)
- Refutation
- S(g);
- Try
- B(H);
- Threat
- QAR1(A)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- P(c);OGATEB::QAB(A)
- R(a);SBLOCK::S(G)
- R(a);SBLOCK::R(E)+B(F),DCHECK
- R(a);N_GUARD::S(G),XR(a)
- B(f);S_CUTR(a)::QAB(A)
- Refutation
- B(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- B(e);::QAR1(A)
- B(e);P_PINB(F)::QAR1(A)
- P(b);::QAR1(A)
- P(c);OGATEB::QAB(A)
- R(a);::S(G)
- B(f);::S(G)
- Refutation
- S(g);
- Try
- Q(A);CHECK
- Vars
- R(a);N_GUARD,P_SPINR(a)::QAB1(A),XR(a)
- Refutation
- K(d);P-FLIGHT,XB(H)
- Try
- Actual
- B(H);
- Threat
- QAR1(A)
- Vars
- R(a);CHECK,OGATE::P(B),XR(a)
- R(a);XB(H)::S(G),XR(a)
- P(c);OGATEB::QAB(A)
- R(a);SBLOCK::S(G)
- R(a);SBLOCK::R(E)+B(F),DCHECK
- B(f);S_CUTR(a)::QAB(A)
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).