MESON Chess Problem Database
Problem Display
PID: 21999 (n7/Q2p4/3P2K1/Bk6/1N6/1P1P4/4B3/1b6 w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
De Tribune, 1923
#2
8 + 4
| 3310 | 2345 Chess Problems | 1997 |
| 5454 | Near Snap | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.d4#
- 1...Bxd3+
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Ba2
- Tries
- 1.Kf5?
- 1...Bxd3+
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3+
- 1.Kg5?
- 1...Bxd3
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3
- 1.Kh5?
- 1...Bxd3
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3
- 1.Kf6?
- 1...Bxd3
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3
- 1.Kh6?
- 1...Bxd3
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3
- 1.Kf7?
- 1...Bxd3
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3
- 1.Kg7?
- 1...Bxd3
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3
- 1.Kh7?
- 1...Bxd3+
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3+
- 1.Bf1?
- 1...Bxd3+
- 2.Bxd3#
- 1...Sb6
- 2.Qxb6#
- 1...Ba2
- 2.d4#
- 1...Sc7
- 2.Qb6#
- 1...Bc2!
- 1...Bxd3+
- 1.Bg4?
- threat
- 2.Bxd7#
- 1...Sb6
- 2.Qxb6#
- 1...Bxd3+!
- threat
- 1.Qg1?
- threat
- 2.Qg5#
- 1...Kxa5
- 2.Qc5#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Bxd3+!
- threat
- 1.Qe3?
- threat
- 2.Qg5#
- 2.Qe5#
- 1...Kxa5
- 2.Qc5#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Bxd3+!
- threat
- 1.Qd4?
- threat
- 2.Qe5#
- 2.Qd5#
- 1...Kxa5
- 2.Qc5#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- 1...Bxd3+!
- threat
- 1.Qb7+?
- 1...Kc5
- 2.Qd5#
- 1...Sb6
- 2.Qxb6#
- 1...Kxa5!
- 1...Kc5
- 1.Qxa8?
- threat
- 2.Qd5#
- 1...Kc5
- 2.Qd5#
- 1...Bxd3+!
- threat
- 1.Kf5?
- Keys
- 1.Qf2!
- threat
- 2.Qf5#
- 1...Kxa5
- 2.Qc5#
- 1...Sb6
- 2.Qxb6#
- 1...Sc7
- 2.Qb6#
- threat
- 1.Qf2!
Anticipated by 20955(1914)
This anticipates 162437(2010)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- B(a);N_PINP(C)::B(A)+P(C)
- B(a);CHECK,OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- S(d);N_GUARD::QAR1(H)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_PINP(C)::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);N_SPINP(C),P-FLIGHT
- Vars
- B(a);OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_GUARD::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);N_SPINP(C),S_FLIGHT
- Vars
- B(a);OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_GUARD::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);N_SPINP(C),P-FLIGHT
- Vars
- B(a);OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_GUARD::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);N_SPINP(C),P-FLIGHT
- Vars
- B(a);OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_GUARD::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);N_SPINP(C),S_FLIGHT
- Vars
- B(a);OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_GUARD,P_PINP(B)::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);N_SPINP(C),P-FLIGHT
- Vars
- B(a);OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_GUARD::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- K(G);S_FLIGHT
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_PINP(C)::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- B(A);
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XP(C)::B(A),XB(a)
- S(d);N_GUARD::QAR1(H),XS(d)
- B(a);N_PINP(C)::B(A)+P(C)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);
- Try
- B(A);
- Threat
- B(A),XP(c)
- Vars
- S(d);N_GUARD::QAR1(H),XS(d)
- Refutation
- B(a);CHECK,XP(C)
- Try
- Q(H);
- Threat
- QAR(H)
- Vars
- K(b);P-FLIGHT,XB(E)::QAR2(H)
- S(d);N_GUARD::QAR1(H),XS(d)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);CHECK,P_SPINB(a),XP(C)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT,XB(E)::QAR2(H)
- S(d);N_GUARD::QAR1(H),XS(d)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);CHECK,P_SPINB(a),XP(C)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT,XB(E)::QAR2(H)
- S(d);N_GUARD::QAR1(H),XS(d)
- S(d);N_GUARD::QAR1(H)
- Refutation
- B(a);CHECK,P_SPINB(a),XP(C)
- Try
- Q(H);CHECK
- Vars
- K(b);P-FLIGHT::QAR1(H)
- S(d);N_GUARD,P_SPINS(d)::QAR1(H),XS(d)
- Refutation
- K(b);P-FLIGHT,XB(E)
- Try
- Q(H);XS(d)
- Threat
- QAR2(H)
- Vars
- K(b);P-FLIGHT::QAR1(H)
- Refutation
- B(a);CHECK,P_SPINB(a),XP(C)
- Try
- Actual
- Q(H);
- Threat
- QAR(H)
- Vars
- K(b);P-FLIGHT,XB(E)::QAR2(H)
- S(d);N_GUARD::QAR1(H),XS(d)
- S(d);N_GUARD::QAR1(H)
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).