MESON Chess Problem Database
Problem Display
PID: 222675 (8/1B4B1/2R1Qp1q/3r2p1/1P1k2N1/4p3/1KP2b2/8 w - - 0 1)
Keeney, Ebenezer Wood
Cincinnati Commercial, 1883
#2
8 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Rc4#
- 2.Qc4#
- 1...Rb5
- 2.Rc4#
- 2.Qc4#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Rc4#
- 2.Qc4#
- 1...Rd6
- 2.Rc4#
- 2.Rxd6#
- 2.Qc4#
- 1...Rd7
- 2.Rc4#
- 2.Qc4#
- 1...Rd8
- 2.Rc4#
- 2.Qc4#
- 1...Be1
- 2.Qxe3#
- 1...Bg3
- 2.Qxe3#
- 1...Bh4
- 2.Qxe3#
- 1...Ra5
- Tries
- 1.Sxf2?
- threat
- 2.Qe4#
- 2.c3#
- 1...Qh1
- 2.c3#
- 1...Qh4
- 2.c3#
- 1...Qg6
- 2.c3#
- 1...Qh7
- 2.c3#
- 1...Rc5
- 2.Qe4#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 2.c3#
- 1...exf2!
- threat
- 1.Sxf6?
- threat
- 2.Qxd5#
- 2.Qe4#
- 1...Qh1
- 2.Sxd5#
- 1...Qh4
- 2.Sxd5#
- 2.Qxd5#
- 1...Qg6
- 2.Qxd5#
- 1...Qh7
- 2.Qxd5#
- 1...Ra5
- 2.Rc4#
- 2.Qe4#
- 1...Rb5
- 2.Rc4#
- 2.Qe4#
- 1...Rc5
- 2.Qe4#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Rc4#
- 2.Qe4#
- 1...Rd6
- 2.Rc4#
- 2.Rxd6#
- 2.Qe4#
- 2.Qxd6#
- 1...Rd7
- 2.Rc4#
- 2.Qe4#
- 1...Rd8
- 2.Rc4#
- 2.Qe4#
- 1...e2
- 2.Qe4#
- 1...Qxf6!
- threat
- 1.Ba6?
- threat
- 2.Rc4#
- 2.c3#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 1...Rb5
- 2.Rc4#
- 2.Qc4#
- 1...Be1
- 2.Rc4#
- 2.Qxe3#
- 1...Rc5!
- threat
- 1.Bxf6+?
- 1...Re5
- 2.Rc4#
- 2.Rd6#
- 2.Qc4#
- 2.Qxe5#
- 1...Qxf6!
- 1...Re5
- 1.Rc3?
- threat
- 2.Qxd5#
- 1...Rc5
- 2.Rd3#
- 2.Qe4#
- 1...Ra5
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rb5
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Re5
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rd6
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 2.Qxd6#
- 1...Rd7
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 2.Qxd7#
- 2.Qe4#
- 2.Qb6#
- 1...Rd8
- 2.Rd3#
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 2.Qb6#
- 1...Qh1!
- threat
- 1.Rc5?
- threat
- 2.Qxd5#
- 1...Rxc5
- 2.Qe4#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rd6
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 2.Qxd6#
- 1...Rd7
- 2.Rc4#
- 2.Qc4#
- 2.Qxd7#
- 2.Qe4#
- 1...Rd8
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Qh1!
- threat
- 1.Rc7?
- threat
- 2.Qxd5#
- 1...Rc5
- 2.Qe4#
- 1...Ra5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rb5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rd6
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 2.Qxd6#
- 1...Rd7
- 2.Rc4#
- 2.Rxd7#
- 2.Qc4#
- 2.Qxd7#
- 2.Qe4#
- 2.Qb6#
- 1...Rd8
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 2.Qb6#
- 1...Qh1!
- threat
- 1.Rc8?
- threat
- 2.Qxd5#
- 1...Rc5
- 2.Qe4#
- 1...Ra5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rb5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Re5
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 1...Rd6
- 2.Rc4#
- 2.Qc4#
- 2.Qe4#
- 2.Qxd6#
- 1...Rd7
- 2.Rc4#
- 2.Qc4#
- 2.Qxd7#
- 2.Qe4#
- 2.Qb6#
- 1...Rd8
- 2.Rc4#
- 2.Rxd8#
- 2.Qc4#
- 2.Qe4#
- 2.Qb6#
- 1...Qh1!
- threat
- 1.Qf5?
- threat
- 2.Qd3#
- 2.c3#
- 1...Rc5
- 2.Qd3#
- 1...Re5
- 2.Qd3#
- 1...Qg6
- 2.c3#
- 1...Qh7
- 2.c3#
- 1...Be1
- 2.Qd3#
- 1...Rxf5!
- threat
- 1.Qxf6+?
- 1...Ke4
- 2.Rc4#
- 2.Re6#
- 1...Re5
- 2.Qxe5#
- 1...Qxf6!
- 1...Ke4
- 1.Sxf2?
- Keys
- 1.Se5!
- threat
- 2.Sf3#
- 2.Rc4#
- 1...Ke4
- 2.Rc4#
- 1...Rxe5
- 2.Rc4#
- 2.Qc4#
- 1...fxe5
- 2.Qg4#
- 1...e2
- 2.Sf3#
- 1...Qh1
- 2.Rc4#
- 1...Qh3
- 2.Rc4#
- 1...Qh5
- 2.Rc4#
- 1...Rc5
- 2.Sf3#
- 1...g4
- 2.Rc4#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- B(a);N_GUARD::QAB1(F),XP(b)
- Tries
- Try
- S(D);XB(a)
- Threat
- DUALS(2)
- Vars
- Q(g);::P(B)
- R(d);::QAR1(F)
- Refutation
- P(b);XS(D)
- Try
- S(D);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD::B(H)+S(D),XR(d)
- Q(g);::QAR1(F),XR(d)
- R(d);::QAR1(F)
- P(b);::QAR1(F)
- Refutation
- Q(g);P_SPINQ(g),XS(D)
- Try
- B(G);
- Threat
- DUALS(2)
- Refutation
- R(d);
- Try
- B(H);CHECK,XP(f)
- Refutation
- Q(g);XB(H)
- Try
- R(E);
- Threat
- QAR1(F),XR(d)
- Refutation
- Q(g);
- Try
- R(E);
- Threat
- QAR1(F),XR(d)
- Vars
- R(d);XR(E)::QAR1(F)
- Refutation
- Q(g);
- Try
- R(E);
- Threat
- QAR1(F),XR(d)
- Vars
- R(d);::QAR1(F)
- Refutation
- Q(g);
- Try
- R(E);
- Threat
- QAR1(F),XR(d)
- Vars
- R(d);::QAR1(F)
- Refutation
- Q(g);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR1(F)
- R(d);N_SPINP(f)::QAR1(F)
- Q(g);::P(B)
- B(a);::QAR1(F)
- Refutation
- R(d);XQ(F)
- Try
- Q(F);CHECK,XP(f)
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB1(F),XR(d)
- Refutation
- Q(g);P_SPINQ(g),XQ(F)
- Try
- Actual
- S(D);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- K(c);P-FLIGHT::R(E)
- P(f);P_SPINP(f),XS(D)::QAR(F)
- P(b);::S(D)
- Q(g);::R1(E)
- R(d);::S(D)
- P(e);::R1(E)
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).