MESON Chess Problem Database
Problem Display
PID: 281989 (8/2B5/6R1/3Q3K/8/5R2/4q3/7k w - - 0 1)
Kozhakin, Vladimir Vladimirovich
Het Reformatorisch Dagblad, 1991
#2
5 + 2
| 15601 | Albrecht-Leiss-Degener Collection | 2025 |
| 5454 | Near Snap | 2025 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Qxd1#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 1...Qxf3+
- 2.Qxf3#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qb5
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 2.Rf5#
- 2.Rff6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 1...Qa2
- 2.Rf1#
- 2.Rh3#
- 2.Qd1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qd1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 1...Qd2
- 2.Rf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qh2+
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 1...Qe4
- 2.Rf1#
- 2.Rh3#
- 1...Qe6
- 2.Rf1#
- 2.Rh3#
- 1...Qe7
- 2.Rf1#
- 2.Rh3#
- 1...Qe8
- 2.Rf1#
- 2.Rh3#
- 1...Qd1
- Tries
- 1.Kh6?
- threat
- 2.Rf1#
- 2.Rh3#
- 1...Qh2+
- 2.Rh3#
- 1...Qe3+
- 2.Rxe3#
- 1...Qxf3
- 2.Qxf3#
- 1...Qg2
- 2.Rf1#
- 1...Qe5
- 2.Rh3#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qd2+!
- threat
- 1.Bf4?
- 1...Qxf3+
- 2.Qxf3#
- 1...Qh2+
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qd1
- 2.Qxd1#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qb5
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 1...Qa2
- 2.Rf1#
- 2.Rh3#
- 2.Qd1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qd1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 1...Qd2
- 2.Rf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 1...Qe4
- 2.Rf1#
- 2.Rh3#
- 1...Qe6
- 2.Rf1#
- 2.Rh3#
- 1...Qe7
- 2.Rf1#
- 2.Rh3#
- 1...Qe8
- 2.Rf1#
- 2.Rh3#
- 1...Qe5+!
- 1...Qxf3+
- 1.Be5?
- 1...Qxf3+
- 2.Qxf3#
- 1...Qh2+
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qd1
- 2.Qxd1#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qb5
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 2.Rf5#
- 2.Rff6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 1...Qa2
- 2.Rf1#
- 2.Rh3#
- 2.Qd1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qd1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 1...Qd2
- 2.Rf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 1...Qe4
- 2.Rf1#
- 2.Rh3#
- 1...Qxe5+!
- 1...Qxf3+
- 1.Bd6?
- 1...Qxf3+
- 2.Qxf3#
- 1...Qh2+
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qd1
- 2.Qxd1#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qb5
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 2.Rf5#
- 2.Rff6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 1...Qa2
- 2.Rf1#
- 2.Rh3#
- 2.Qd1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qd1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 1...Qd2
- 2.Rf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 1...Qe4
- 2.Rf1#
- 2.Rh3#
- 1...Qe6
- 2.Rf1#
- 2.Rh3#
- 1...Qe7
- 2.Rf1#
- 2.Rh3#
- 1...Qe8
- 2.Rf1#
- 2.Rh3#
- 1...Qe5+!
- 1...Qxf3+
- 1.Bb8?
- 1...Qxf3+
- 2.Qxf3#
- 1...Qh2+
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qd1
- 2.Qxd1#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qb5
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 2.Rf5#
- 2.Rff6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 1...Qa2
- 2.Rf1#
- 2.Rh3#
- 2.Qd1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qd1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 1...Qd2
- 2.Rf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 1...Qe4
- 2.Rf1#
- 2.Rh3#
- 1...Qe6
- 2.Rf1#
- 2.Rh3#
- 1...Qe7
- 2.Rf1#
- 2.Rh3#
- 1...Qe8
- 2.Rf1#
- 2.Rh3#
- 1...Qe5+!
- 1...Qxf3+
- 1.Rg5?
- 1...Qxf3+
- 2.Qxf3#
- 1...Qh2+
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qe5
- 2.Rh3#
- 1...Qd1
- 2.Qxd1#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qb5
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 2.Rff5#
- 2.Rf6#
- 2.Rf7#
- 2.Rf8#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 1...Qa2
- 2.Rf1#
- 2.Rh3#
- 2.Qd1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qd1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 1...Qd2
- 2.Rf1#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 1...Qe4
- 2.Rf1#
- 2.Rh3#
- 1...Qe6
- 2.Rf1#
- 2.Rh3#
- 1...Qe7
- 2.Rf1#
- 2.Rh3#
- 1...Qe8+!
- 1...Qxf3+
- 1.Qd1+?
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 2.Qxf1#
- 1...Qe1
- 2.Rh3#
- 2.Qxe1#
- 1...Qxd1!
- 1...Qf1
- 1.Kh6?
- Keys
- 1.Qe4!
- 1...Qxf3+
- 2.Qxf3#
- 1...Qb5+
- 2.Rf5#
- 1...Qh2+
- 2.Rh3#
- 1...Qxe4
- 2.Rf1#
- 2.Rh3#
- 1...Qg2
- 2.Rf1#
- 1...Qd1
- 2.Qh4#
- 1...Qf1
- 2.Rxf1#
- 2.Rh3#
- 1...Qd3
- 2.Rf1#
- 2.Rxd3#
- 2.Rh3#
- 2.Qh4#
- 1...Qc4
- 2.Rf1#
- 2.Rh3#
- 1...Qa6
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rh3#
- 2.Rf5#
- 2.Rff6#
- 2.Rf7#
- 2.Rf8#
- 2.Qh4#
- 1...Qe1
- 2.Rf1#
- 2.Re3#
- 2.Rh3#
- 2.Qxe1#
- 1...Qa2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qe1#
- 1...Qb2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 2.Qe1#
- 1...Qc2
- 2.Rf1#
- 2.Rh3#
- 2.Qe1#
- 1...Qd2
- 2.Rf1#
- 2.Rf2#
- 2.Rh3#
- 1...Qf2
- 2.Rxf2#
- 2.Rh3#
- 1...Qe3
- 2.Rf1#
- 2.Rxe3#
- 2.Rh3#
- 2.Qh4#
- 1...Qxf3+
- 1.Qe4!
Anticipated by 227484(1926)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD::QAR(B),XQ(b)
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);N_PINR(A)::R(A)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Tries
- Try
- K(C);N_SPINR(A),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK::QAB(B)+R(A)
- Q(b);CHECK,N_GUARD::QAB(B)+R(A),XQ(b)
- Q(b);OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);::R(A)
- Q(b);::QAB(B)+R(A),DCHECK
- Refutation
- Q(b);CHECK
- Try
- B(E);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Q(b);N_PINR(A)::R(A)
- Q(b);N_GUARD::QAR(B),XQ(b)
- Refutation
- Q(b);CHECK,N_PINR(A)
- Try
- B(E);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Q(b);N_PINR(A)::R(A)
- Q(b);N_GUARD::QAR(B),XQ(b)
- Refutation
- Q(b);CHECK,N_PINR(A),XB(E)
- Try
- B(E);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Q(b);N_PINR(A)::R(A)
- Q(b);N_GUARD::QAR(B),XQ(b)
- Refutation
- Q(b);CHECK,N_PINR(A)
- Try
- B(E);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Q(b);N_PINR(A)::R(A)
- Q(b);N_GUARD::QAR(B),XQ(b)
- Refutation
- Q(b);CHECK,N_PINR(A)
- Try
- R(D);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Q(b);N_PINR(A)::R(A)
- Q(b);N_PINR(A),P_PINR(D)::QAB(B)+R(A),DCHECK
- Q(b);N_GUARD::QAR(B),XQ(b)
- Refutation
- Q(b);CHECK,N_PINR(A)
- Try
- Q(B);CHECK
- Refutation
- Q(b);XQ(B)
- Try
- Actual
- Q(B);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XR(A)::QAB(B),XQ(b)
- Q(b);CHECK,N_PINR(A)::QAB(B)+R(A)
- Q(b);N_PINR(A)::R(A)
- Q(b);N_GUARD::QAR(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).