MESON Chess Problem Database
Problem Display
PID: 66315 (4B3/1p4Np/1P5K/3pkp1P/N2RbR2/Q7/1P3P2/8 w - - 0 1)
Bohm, Ferenc
Tijdschrift vd NSB, 1931
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Kf6
- 2.Qd6#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...Kxd4
- Tries
- 1.Kg5?
- 1...Kxd4
- 2.Qc3#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...h6+!
- 1...Kxd4
- 1.Kxh7?
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...Kf6!
- 1...Kxd4
- 1.Bb5?
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...Kf6!
- 1...Kxd4
- 1.Bg6?
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Kf6
- 2.Qd6#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...hxg6!
- 1...Kxd4
- 1.Bd7?
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...Kf6!
- 1...Kxd4
- 1.Bf7?
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...Kf6!
- 1...Kxd4
- 1.Rxd5+?
- 1...Kxf4
- 2.Qg3#
- 1...Kxd5
- 2.Qc5#
- 1...Kf6
- 2.Qd6#
- 2.Qf8#
- 1...Bxd5!
- 1...Kxf4
- 1.Rfxe4+?
- 1...Kf6
- 2.Re6#
- 2.Qd6#
- 2.Qe7#
- 2.Qf8#
- 1...dxe4
- 2.Qd6#
- 1...fxe4!
- 1...Kf6
- 1.Rh4?
- 1...Kxd4
- 2.Qc3#
- 1...Kf6
- 2.Qd6#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...f4!
- 1...Kxd4
- 1.Rxf5+?
- 1...Kxd4
- 2.Qc3#
- 1...Bxf5!
- 1...Kxd4
- 1.Qb4?
- 1...Kf6
- 2.Qd6#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Rxf5#
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Rxf5#
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Rxf5#
- 2.Qe7#
- 1...Kxf4!
- 1...Kf6
- 1.Qc5?
- 1...Kf6
- 2.Qd6#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Rxf5#
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Rxf5#
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Rxf5#
- 2.Qe7#
- 1...Kxf4!
- 1...Kf6
- 1.Qf8?
- 1...Kxf4
- 2.Qxf5#
- 1...Bb1
- 2.Qe7#
- 1...Bh1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bg2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Bf3
- 2.Qe7#
- 1...Kxd4!
- 1...Kxf4
- 1.f3?
- 1...Kxd4
- 2.Qc3#
- 1...Kf6
- 2.Qd6#
- 1...Bxf3
- 2.Qe7#
- 1...Bb1
- 2.Qe7#
- 1...Bc2
- 2.Qe7#
- 1...Bd3
- 2.Qe7#
- 1...Kxf4!
- 1...Kxd4
- 1.Kg5?
- Keys
- 1.Sc5!
- 1...Kxd4
- 2.Qc3#
- 1...Kxf4
- 2.Qg3#
- 1...Kd6
- 2.Sd3#
- 1...Kf6
- 2.Sd7#
- 1...Bb1
- 2.Sd7#
- 1...Bh1
- 2.Sd7#
- 1...Bc2
- 2.Sd7#
- 1...Bg2
- 2.Sd7#
- 1...Bd3
- 2.Sd7#
- 1...Bf3
- 2.Sd7#
- 1...Kxd4
- 1.Sc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- K(c);P_SPINP(d),S_FLIGHT::QAR2(C)
- B(a);::QAR2(C)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- B(a);::QAR2(C)
- Refutation
- P(f);CHECK
- Try
- K(I);P-FLIGHT,XP(f)
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT
- Try
- B(K);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT
- Try
- B(K);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- K(c);P_SPINP(d),S_FLIGHT::QAR2(C)
- B(a);::QAR2(C)
- Refutation
- P(f);XB(K)
- Try
- B(K);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT
- Try
- B(K);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT
- Try
- R(E);CHECK,XP(b)
- Vars
- K(c);S_FLIGHT,XR(F)::QAB1(C)
- K(c);P-FLIGHT,XR(E)::QAR1(C)
- Refutation
- B(a);XR(E)
- Try
- R(F);CHECK,XB(a)
- Vars
- P(b);XR(F)::QAB1(C)
- Refutation
- P(d);XR(F)
- Try
- R(F);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);S_FLIGHT::QAR2(C)
- B(a);::QAR2(C)
- Refutation
- P(d);
- Try
- R(F);CHECK,XP(d)
- Vars
- K(c);S_FLIGHT,XR(E)::QAB1(C)
- Refutation
- B(a);XR(F)
- Try
- Q(C);
- Vars
- K(c);P_SPINP(d),S_FLIGHT::QAR2(C)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINB(a),S_FLIGHT,XR(F)
- Try
- Q(C);P_PINP(b)
- Vars
- K(c);N_SPINP(b),P_SPINP(d),S_FLIGHT::QAR2(C)
- B(a);::QAR2(C)
- Refutation
- K(c);N_SPINP(b),P_SPINB(a),S_FLIGHT,XR(F)
- Try
- Q(C);
- Vars
- K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XR(F)::QAR1(C),XP(d)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINB(a),S_FLIGHT,XR(E)
- Try
- P(B);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);P_SPINP(d),S_FLIGHT::QAR2(C)
- B(a);XP(B)::QAR2(C)
- B(a);::QAR2(C)
- Refutation
- K(c);P_SPINB(a),S_FLIGHT,XR(F)
- Try
- Actual
- S(D);
- Vars
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(E)::QAB1(C)
- K(c);OGATEB,P_SPINB(a),S_FLIGHT,XR(F)::QAB1(C)
- K(c);P_SPINP(b),S_FLIGHT::QAB(C)+S(D)
- K(c);P_SPINP(d),S_FLIGHT::S(D)
- B(a);::S(D)
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).