MESON Chess Problem Database
Problem Display
PID: 110121 (5R2/2B1qN2/2BR2P1/8/1K2Pkpp/3pp3/6Q1/5N2 w - - 0 1)
Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)
64 Shakhmatnoe obozrenie, 1928
#2
10 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg5
- 2.Rf6#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qf6
- 2.Rxf6#
- 1...Qd8
- 2.Rf6#
- 2.Rdxd8#
- 1...Qxe4+
- 2.Qxe4#
- 1...Qe5
- 2.Rf6#
- 1...Qe6
- 2.Rxe6#
- 1...Qxc7
- 2.Rf6#
- 1...Qd7
- 2.Rf6#
- 2.Rxd7#
- 1...Qxf7
- 2.Rd5#
- 1...Qe8
- 2.Re6#
- 2.Rf6#
- 1...e2
- 2.Qf2#
- 1...h3
- 2.Qg3#
- 1...Qg5
- Tries
- 1.Kb3?
- threat
- 2.Rf6#
- 1...Qe6+
- 2.Rxe6#
- 1...Qxf7+
- 2.Rd5#
- 1...Qxd6
- 2.Bxd6#
- 1...Qf6
- 2.Rxf6#
- 1...g3!
- threat
- 1.Ka4?
- threat
- 2.Rf6#
- 1...Qxe4+
- 2.Qxe4#
- 1...Qxd6
- 2.Bxd6#
- 1...Qxf7
- 2.Rd5#
- 1...Qf6
- 2.Rxf6#
- 1...Qe6
- 2.Rxe6#
- 1...g3!
- threat
- 1.Kc4?
- threat
- 2.Rf6#
- 1...Qxe4+
- 2.Qxe4#
- 1...Qe6+
- 2.Rxe6#
- 1...Qxf7+
- 2.Rd5#
- 1...Qxd6
- 2.Bxd6#
- 1...Qf6
- 2.Rxf6#
- 1...g3!
- threat
- 1.Sh2?
- threat
- 2.Qxg4#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qxf7
- 2.Rd5#
- 1...e2
- 2.Qf2#
- 1...Qg5
- 2.Rf6#
- 1...Qe6
- 2.Rxe6#
- 1...Qd7
- 2.Rf6#
- 2.Rxd7#
- 1...g3
- 2.Qf1#
- 2.Qf3#
- 1...Qxe4+!
- threat
- 1.Bd7?
- threat
- 2.Qxg4#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qxe4+
- 2.Rd4#
- 1...Qxd7
- 2.Rf6#
- 2.Rxd7#
- 1...Qxf7
- 2.Rd5#
- 1...Qg5
- 2.Rf6#
- 1...Qe6
- 2.Rxe6#
- 1...g3!
- threat
- 1.Qh2+?
- 1...Kf3
- 2.Se5#
- 2.Sg5#
- 2.e5#
- 1...g3!
- 1...Kf3
- 1.Kb3?
- Keys
- 1.Sg3!
- threat
- 2.Sh5#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qxe4+
- 2.Rd4#
- 1...Qxf7
- 2.Rd5#
- 1...hxg3
- 2.Qf1#
- 1...e2
- 2.Qf2#
- 1...Qg5
- 2.Rf6#
- 1...Qe5
- 2.Rf6#
- threat
- 1.Sg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(f);N_PINR(F)::B(H)+R(F),DCHECK
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);N_PINR(F)::B(H)+R(F),DCHECK,XQ(f)
- Q(f);CHECK,N_PINR(F),OGATE,XP(D)::QAR1(B),XQ(f)
- Q(f);N_PINR(F)::R(F)
- Q(f);N_PINR(F)::B(H)+R(F),XQ(f)
- Q(f);N_PINR(F),XB(H)::R(F)
- Q(f);N_PINR(F),P_SPINQ(f),XS(I)::B(H)+R(F)
- P(b);N_GUARD::QAR2(B)
- P(e);N_GUARD::QAB1(B)
- Tries
- Try
- K(C);N_SPINR(F),P-FLIGHT
- Threat
- B(H)+R(F),DCHECK
- Vars
- Q(f);CHECK,N_GUARD::B(H)+R(F),XQ(f)
- Q(f);CHECK,N_GUARD,P_SPINQ(f),XS(I)::B(H)+R(F)
- Q(f);OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);::B(H)+R(F),DCHECK,XQ(f)
- Refutation
- P(d);
- Try
- K(C);N_SPINR(F),P-FLIGHT
- Threat
- B(H)+R(F),DCHECK
- Vars
- Q(f);CHECK,OGATE,XP(D)::QAR1(B),XQ(f)
- Q(f);OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);N_GUARD,P_SPINQ(f),XS(I)::B(H)+R(F)
- Q(f);::B(H)+R(F),DCHECK,XQ(f)
- Q(f);N_GUARD::B(H)+R(F),XQ(f)
- Refutation
- P(d);
- Try
- K(C);N_SPINR(F),P-FLIGHT
- Threat
- B(H)+R(F),DCHECK
- Vars
- Q(f);CHECK,OGATE,XP(D)::QAR1(B),XQ(f)
- Q(f);CHECK,N_GUARD::B(H)+R(F),XQ(f)
- Q(f);CHECK,N_GUARD,P_SPINQ(f),XS(I)::B(H)+R(F)
- Q(f);OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);::B(H)+R(F),DCHECK,XQ(f)
- Refutation
- P(d);
- Try
- S(A);
- Threat
- QAR1(B),XP(d)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);N_PINR(F),P_SPINQ(f),XS(I)::B(H)+R(F)
- P(b);N_GUARD::QAR2(B)
- Q(f);N_PINR(F)::B(H)+R(F),DCHECK
- Q(f);N_PINR(F)::B(H)+R(F),XQ(f)
- Refutation
- Q(f);CHECK,N_PINR(F),XP(D)
- Try
- B(E);
- Threat
- QAR1(B),XP(d)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);CHECK,N_PINR(F),XP(D)::B(H)+R(F)
- Q(f);N_PINR(F),P_SPINQ(f),XS(I)::B(H)+R(F)
- Q(f);N_PINR(F)::B(H)+R(F),DCHECK
- Q(f);N_PINR(F)::B(H)+R(F),XQ(f)
- Refutation
- P(d);
- Try
- Q(B);CHECK
- Refutation
- P(d);P_SPINP(d)
- Try
- Actual
- S(A);
- Threat
- S(A)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(F)::B(H),XQ(f)
- Q(f);CHECK,N_PINR(F),XP(D)::B(H)+R(F)
- Q(f);N_PINR(F),P_SPINQ(f),XS(I)::B(H)+R(F)
- P(e);SBLOCK,XS(A)::QAR(B)
- P(b);N_GUARD::QAR2(B)
- Q(f);N_PINR(F)::B(H)+R(F),DCHECK
- Q(f);N_PINR(F)::R(F)
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).