MESON Chess Problem Database
Problem Display
PID: 214527 (8/3K4/1p2P3/1Rp3B1/2PPk1nR/8/1N4b1/4N1QB w - - 0 1)
Elson, Jacob
Philadelphia Times, 1880
#2
11 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bxh1
- 2.Qxg4#
- 1...Bf3
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bxh1
- Tries
- 1.Kc6?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5+!
- 1...Bxh1
- 1.Kd6?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Re5#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Kc7?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Ke7?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Kc8?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Kd8?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Ke8?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Sc2?
- 1...Kf3
- 2.Qxg2#
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Kf3
- 1.Sxg2?
- 1...Kf3
- 2.Sf4#
- 1...cxd4
- 2.Se1#
- 2.Se3#
- 2.Sf4#
- 1...Kf5!
- 1...Kf3
- 1.Sed3?
- 1...Kf3
- 2.Qxg2#
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Kf3
- 1.Sd1?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Sf2#
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Sbd3?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Sf2#
- 2.Bxg2#
- 2.Rxg4#
- 2.Re5#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Sa4?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Bc1?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Bd2?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Bh6?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Rxc5?
- threat
- 2.Bxg2#
- 2.Rxg4#
- 2.Re5#
- 2.Qe3#
- 1...Bxh1
- 2.Rxg4#
- 2.Re5#
- 2.Qe3#
- 2.Qxg4#
- 1...Bf3
- 2.Bxf3#
- 2.Rxg4#
- 2.Re5#
- 2.Qe3#
- 2.Qxg4#
- 1...bxc5!
- threat
- 1.Qf2?
- threat
- 2.Bxg2#
- 2.Rxg4#
- 2.Qf4#
- 1...Bxh1
- 2.Rxg4#
- 2.Qf4#
- 1...Bf3!
- threat
- 1.Qf1?
- threat
- 2.Rxg4#
- 2.Qd3#
- 2.Qf4#
- 1...Bf3
- 2.Qd3#
- 1...Kxd4!
- threat
- 1.e7?
- 1...Bxh1
- 2.Qxg4#
- 1...cxd4
- 2.Bxg2#
- 2.Rxg4#
- 2.Qxg2#
- 2.e8Q#
- 2.e8R#
- 1...Bf3
- 2.Qxg4#
- 1...Kf5!
- 1...Bxh1
- 1.Kc6?
- Keys
- 1.Sf3!
- 1...Kxf3
- 2.Qxg2#
- 1...Kf5
- 2.Qb1#
- 1...Bxh1
- 2.Qxg4#
- 1...Bxf3
- 2.Qxg4#
- 1...cxd4
- 2.Sd2#
- 1...Bf1
- 2.Qxg4#
- 1...Bh3
- 2.Qb1#
- 1...Kxf3
- 1.Sf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Tries
- Try
- K(K);S_FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);CHECK,N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- K(K);P-FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- K(K);P-FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- K(K);P-FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- K(K);S_FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- K(K);P-FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- K(K);S_FLIGHT
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- S(A);
- Vars
- K(b);N_SPINS(c),S_FLIGHT::QAB1(B),XB(a)
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- S(A);XB(a)
- Vars
- K(b);N_SPINS(c),S_FLIGHT::B(C)+S(A)
- Refutation
- K(b);N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- S(A);
- Vars
- K(b);N_SPINS(c),S_FLIGHT::QAB1(B),XB(a)
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- S(D);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- S(D);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- S(D);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- B(I);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- B(I);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- B(I);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- R(H);XP(d)
- Threat
- DUALS(4)
- Refutation
- P(e);XR(H)
- Try
- Q(B);
- Threat
- DUALS(3)
- Refutation
- B(a);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB1(B)
- Refutation
- K(b);N_SPINB(a),P-FLIGHT,XP(F)
- Try
- P(J);
- Vars
- B(a);N_SPINB(a),OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE::QAR2(B),XS(c)
- Refutation
- K(b);N_SPINB(a),N_SPINS(c),P_SPINP(d),S_FLIGHT
- Try
- Actual
- S(A);N_PINB(a)
- Vars
- K(b);N_SPINS(c),OGATEB,P_SPINB(a),S_FLIGHT,XS(A)::QAB1(B),XB(a)
- K(b);N_SPINS(c),P_SPINP(d),S_FLIGHT::QAB(B)
- B(a);OGATE,XB(C)::QAR2(B),XS(c)
- B(a);OGATE,P_SPINB(a),XS(A)::QAR2(B),XS(c)
- P(d);XP(F)::S(A)
- B(a);OGATE::QAR2(B),XS(c)
- B(a);::QAB(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).