MESON Chess Problem Database
Problem Display
PID: 233713 (6B1/1KP2r2/2Rrk3/5N2/4q1P1/3N4/4R3/3Q4 w - - 0 1)
Benko, Pal Charles
Chess Life & Review, 1976
#2
9 + 4
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kd7
- 2.c8Q#
- 1...Qxe2
- 2.Rxd6#
- 1...Qe3
- 2.Rxd6#
- 1...Qe5
- 2.Rxd6#
- 1...Kd7
- Tries
- 1.Sf4+?
- 1...Ke5
- 2.Qxd6#
- 1...Kd7
- 2.c8Q#
- 1...Kf6!
- 1...Ke5
- 1.Sc5+?
- 1...Ke5
- 2.Qxd6#
- 1...Kf6!
- 1...Ke5
- 1.Rxe4+?
- 1...Kd5
- 2.Sf2#
- 2.Sc5#
- 2.Re5#
- 1...Kd7
- 2.Sc5#
- 2.Rxd6#
- 2.c8Q#
- 1...Kf6!
- 1...Kd5
- 1.Qc2?
- 1...Kd5
- 2.Rxd6#
- 1...Kd7
- 2.c8Q#
- 1...Qxe2
- 2.Rxd6#
- 1...Rxc6
- 2.Qxc6#
- 1...Qe3
- 2.Rxd6#
- 1...Qe5
- 2.Rxd6#
- 1...Kf6!
- 1...Kd5
- 1.Qb3+?
- 1...Kd7
- 2.c8Q#
- 1...Kf6!
- 1...Kd7
- 1.Qa4?
- 1...Kd5
- 2.Rxd6#
- 2.Qxe4#
- 1...Kd7
- 2.c8Q#
- 1...Qxe2
- 2.Rxd6#
- 1...Rxc6
- 2.Qxc6#
- 1...Qe3
- 2.Rxd6#
- 1...Qe5
- 2.Rxd6#
- 1...Kf6!
- 1...Kd5
- 1.Qh1?
- 1...Kd5
- 2.Qxe4#
- 1...Kf6
- 2.Qh6#
- 1...Kd7
- 2.c8Q#
- 1...Qxe2
- 2.Rxd6#
- 1...Qe3
- 2.Rxd6#
- 1...Qe5
- 2.Rxd6#
- 1...Rxc6!
- 1...Kd5
- 1.Sf4+?
- Keys
- 1.Qc1!
- 1...Kd5
- 2.Rxd6#
- 1...Kf6
- 2.Qh6#
- 1...Kd7
- 2.c8Q#
- 1...Qxe2
- 2.Rxd6#
- 1...Rxc6
- 2.Qxc6#
- 1...Qe3
- 2.Rxd6#
- 1...Qe5
- 2.Rxd6#
- 1...Kd5
- 1.Qc1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(c);N_PINP(H),N_SPINQ(a),N_SPINR(b),S_FLIGHT::P=Q
- Q(a);N_PINR(F),N_SPINQ(a),XR(B)::R1(F),XR(b)
- Q(a);N_PINR(F)::R1(F),XR(b)
- Tries
- Try
- S(C);CHECK
- Vars
- K(c);N_SPINR(b),P-FLIGHT::QAB1(A),XR(b)
- K(c);N_PINP(H),N_SPINQ(a),S_FLIGHT::P=Q
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT
- Try
- S(C);CHECK
- Vars
- K(c);N_SPINR(b),P-FLIGHT::QAB1(A),XR(b)
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT
- Try
- R(B);CHECK,N_SPINR(F),XQ(a)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(A);
- Vars
- K(c);N_PINR(F),N_SPINQ(a),N_SPINR(b),P_SPINR(d),S_FLIGHT::R1(F),XR(b)
- K(c);N_PINP(H),N_SPINQ(a),N_SPINR(b),S_FLIGHT::P=Q
- Q(a);N_PINR(F),N_SPINQ(a),XR(B)::R1(F),XR(b)
- R(b);N_SPINR(b),OGATE,P_SPINR(d),XR(F)::QAR2(A),XR(b)
- Q(a);N_PINR(F)::R1(F),XR(b)
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT
- Try
- Q(A);CHECK
- Vars
- K(c);N_PINP(H),N_SPINQ(a),N_SPINR(b),S_FLIGHT::P=Q
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT
- Try
- Q(A);
- Vars
- K(c);N_PINP(H),N_SPINQ(a),N_SPINR(b),S_FLIGHT::P=Q
- Q(a);N_PINR(F),N_SPINQ(a),XR(B)::R1(F),XR(b)
- R(b);N_SPINR(b),OGATE,P_SPINR(d),XR(F)::QAR2(A),XR(b)
- Q(a);N_PINR(F)::R1(F),XR(b)
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT
- Try
- Q(A);
- Vars
- K(c);N_PINR(F),N_SPINR(b),P_SPINR(d),S_FLIGHT::QAB1(A),XQ(a)
- K(c);N_SPINQ(a),P-FLIGHT::QAR2(A)
- K(c);N_PINP(H),N_SPINQ(a),N_SPINR(b),S_FLIGHT::P=Q
- Q(a);N_PINR(F),N_SPINQ(a),XR(B)::R1(F),XR(b)
- Q(a);N_PINR(F)::R1(F),XR(b)
- Refutation
- R(b);N_SPINR(b),P_SPINR(d),XR(F)
- Try
- Actual
- Q(A);
- Vars
- K(c);N_PINR(F),N_SPINQ(a),N_SPINR(b),P_SPINR(d),S_FLIGHT::R1(F),XR(b)
- K(c);N_SPINQ(a),P-FLIGHT::QAR2(A)
- K(c);N_PINP(H),N_SPINQ(a),N_SPINR(b),S_FLIGHT::P=Q
- Q(a);N_PINR(F),N_SPINQ(a),XR(B)::R1(F),XR(b)
- R(b);N_SPINR(b),OGATE,P_SPINR(d),XR(F)::QAR2(A),XR(b)
- Q(a);N_PINR(F)::R1(F),XR(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).