MESON Chess Problem Database
Problem Display
PID: 163368 (3B1KQ1/4R1P1/r4k2/2q1N3/r3R2P/1b2N3/5p2/8 w - - 0 1)
Shanshin, Valery Yurevich
Uralski Problemist, 1994
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Re6#
- 2.Rd7#
- 1...Qb6
- 2.Re6#
- 2.Rc7#
- 1...Qa7
- 2.Re6#
- 2.Rxa7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 1...Qxe7+
- 2.Bxe7#
- 1...Qc1
- 2.Re6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re8#
- 1...Qc2
- 2.Re6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re8#
- 1...Qc3
- 2.Re6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re8#
- 1...Qc4
- 2.Re6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re8#
- 1...Qa5
- 2.Re6#
- 2.Rc7#
- 1...Qb5
- 2.Re6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re8#
- 1...Qd5
- 2.Re6#
- 2.Rd7#
- 1...Qxe5
- 2.Re6#
- 1...Qc6
- 2.Re6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re8#
- 1...Qc7
- 2.Re6#
- 2.Rxc7#
- 1...Qc8
- 2.Re6#
- 1...Ra1
- 2.Rf4#
- 1...Ra2
- 2.Rf4#
- 1...Ra3
- 2.Rf4#
- 1...Rc4
- 2.Qf7#
- 1...R4a5
- 2.Rf4#
- 1...Rd6
- 2.Re6#
- 2.Rd7#
- 1...Re6
- 2.Qf7#
- 1...Bd1
- 2.Qf7#
- 1...Bc2
- 2.Qf7#
- 1...Bc4
- 2.Rf4#
- 1...Bf7
- 2.Qxf7#
- 1...Qd4
- Tries
- 1.Qxb3?
- threat
- 2.Qf7#
- 2.g8S#
- 1...Qxe7+
- 2.Bxe7#
- 1...Qxe3
- 2.Rf7#
- 2.Qf7#
- 1...Qxe5
- 2.Re6#
- 2.Qf7#
- 1...Qc4
- 2.Re8#
- 1...Rc4
- 2.g8S#
- 1...Re6
- 2.Qxe6#
- 2.g8S#
- 1...Qd5!
- threat
- 1.Qe6+?
- 1...Rxe6
- 2.g8S#
- 1...Bxe6!
- 1...Rxe6
- 1.Qh7?
- threat
- 2.S3g4#
- 2.S5g4#
- 2.Sd7#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qxe3
- 2.Sg4#
- 2.Sd7#
- 2.Re8#
- 2.Qg6#
- 1...Qxe5
- 2.Sg4#
- 2.R7xe5#
- 2.Qh6#
- 1...Rxe4
- 2.Sd7#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...f1Q
- 2.S3g4#
- 2.S5g4#
- 2.Sd7#
- 2.Qg6#
- 2.Qh6#
- 1...f1R
- 2.S3g4#
- 2.S5g4#
- 2.Sd7#
- 2.Qg6#
- 2.Qh6#
- 1...Qd4
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qd6
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qa7
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qb5
- 2.S3g4#
- 2.S5g4#
- 2.Re8#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qd5
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qc6
- 2.S3g4#
- 2.S5g4#
- 2.Re8#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qc7
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Qc8
- 2.Qg6#
- 2.Qh6#
- 1...Rd4
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Rd6
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Ra7
- 2.S3g4#
- 2.S5g4#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 1...Bd1
- 2.Sd7#
- 2.Qf5#
- 2.Qg6#
- 2.Qh6#
- 2.g8S#
- 1...Be6
- 2.Qg6#
- 2.Qh6#
- 1...Bf7
- 2.S3g4#
- 2.S5g4#
- 2.Sd7#
- 2.Qf5#
- 1...Qxe7+!
- threat
- 1.Qxb3?
- Keys
- 1.Qc4!
- threat
- 2.Rf4#
- 2.g8S#
- 1...Qxe7+
- 2.Bxe7#
- 1...Qxe3
- 2.Rf7#
- 1...Qxc4
- 2.Re8#
- 1...Qxe5
- 2.Re6#
- 1...Rxc4
- 2.g8S#
- 1...Bxc4
- 2.Rf4#
- 1...f1Q
- 2.Qxf1#
- 2.g8S#
- 1...f1R
- 2.Qxf1#
- 2.g8S#
- 1...Qd4
- 2.Re6#
- 2.Rd7#
- 2.Rf7#
- 2.g8S#
- 1...Qd5
- 2.Rf4#
- 1...Qc8
- 2.Re6#
- 2.Rf7#
- 2.g8S#
- 1...Re6
- 2.g8S#
- 1...Bc2
- 2.Qf7#
- 2.g8S#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(E)::B(G),XQ(d)
- Q(d);N_PINR(E),XS(D)::B(G)+R(E),DCHECK
- Q(d);N_PINR(E),P_PINB(G)::B(G)+R(E),DCHECK
- R(c);N_GUARD::R(B)
- R(c);S_CUTB(b)::QAR1(I)
- R(e);S_CUTB(b)::QAR1(I)
- B(b);N_GUARD::QAR1(I)
- B(b);S_CUTR(c)::R(B)
- B(b);N_GUARD::QAR1(I),XB(b)
- Tries
- Try
- Q(I);XB(b)
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(E)::B(G),XQ(d)
- Q(d);N_PINR(E)::B(G)+R(E)
- R(c);::P=S
- Refutation
- Q(d);N_PINR(E)
- Try
- Q(I);CHECK
- Vars
- R(e);N_GUARD,S_CUTB(b),XQ(I)::P=S
- Refutation
- B(b);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(6)
- Refutation
- Q(d);CHECK,P_SPINQ(d),XR(E)
- Try
- Actual
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,P_SPINQ(d),XR(E)::B(G),XQ(d)
- Q(d);N_PINR(E),XS(A)::B(G)+R(E),DCHECK
- Q(d);N_PINR(E),XQ(I)::B(G)+R(E)
- Q(d);N_PINR(E),XS(D)::B(G)+R(E),DCHECK
- R(c);XQ(I)::P=S
- B(b);XQ(I)::R(B)
- Q(d);N_PINR(E)::R(B)
- R(e);::P=S
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).