MESON Chess Problem Database
Problem Display
PID: 172461 (3k4/1qR2K2/3BB3/8/8/8/Q7/8 w - - 0 1)
Andreev, Aleksandr Grigorevich
Vecherni Krasnodar, 1997
#2
5 + 2
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Rc8#
- 1...Qg2
- 2.Rc8#
- 1...Qe4
- 2.Rc8#
- 1...Qd5
- 2.Rc8#
- 1...Qa8
- 2.Qxa8#
- 1...Qc8
- 2.Rxc8#
- 1...Qb1
- 2.Rc8#
- 1...Qb2
- 2.Rc8#
- 1...Qb3
- 2.Rc8#
- 1...Qb4
- 2.Rc8#
- 1...Qb5
- 2.Rc8#
- 1...Qb6
- 2.Rc8#
- 1...Qh1
- Tries
- 1.Qc4?
- threat
- 2.Be7#
- 2.Qh4#
- 1...Qxc7+
- 2.Bxc7#
- 2.Qxc7#
- 1...Qh1
- 2.Be7#
- 2.Rd7#
- 2.Rc8#
- 1...Qg2
- 2.Be7#
- 2.Rd7#
- 2.Rc8#
- 1...Qe4
- 2.Be7#
- 2.Rd7#
- 2.Rc8#
- 1...Qd5
- 2.Be7#
- 2.Rd7#
- 2.Rc8#
- 1...Qc6
- 2.Qh4#
- 1...Qb2
- 2.Be7#
- 2.Rd7#
- 2.Rc8#
- 1...Qb4
- 2.Rd7#
- 2.Rc8#
- 1...Qb5
- 2.Be7#
- 2.Rc8#
- 1...Qf3+!
- threat
- 1.Qd2?
- threat
- 2.Qg5#
- 1...Qxc7+
- 2.Be7#
- 1...Qg2
- 2.Rc8#
- 1...Qd5
- 2.Rc8#
- 1...Qb2
- 2.Rc8#
- 1...Qb5
- 2.Rc8#
- 1...Qf3+!
- threat
- 1.Qh2?
- threat
- 2.Be7#
- 2.Qh4#
- 2.Qh8#
- 1...Qxc7+
- 2.Bxc7#
- 1...Qh1
- 2.Be7#
- 2.Rc8#
- 1...Qg2
- 2.Be7#
- 2.Rc8#
- 1...Qe4
- 2.Be7#
- 2.Rc8#
- 2.Qh8#
- 1...Qd5
- 2.Be7#
- 2.Rc8#
- 2.Qh8#
- 1...Qc6
- 2.Be7#
- 2.Qh4#
- 1...Qb2
- 2.Be7#
- 2.Rc8#
- 1...Qb4
- 2.Rc8#
- 2.Qh8#
- 1...Qb5
- 2.Be7#
- 2.Rc8#
- 1...Qf3+!
- threat
- 1.Qa5?
- threat
- 2.Be7#
- 2.Rxb7#
- 2.Qg5#
- 1...Qxc7+
- 2.Bxc7#
- 2.Be7#
- 2.Qxc7#
- 1...Qh1
- 2.Be7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Re7#
- 2.Rc8#
- 2.Qg5#
- 1...Qg2
- 2.Be7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Re7#
- 2.Rc8#
- 1...Qe4
- 2.Be7#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Ra7#
- 2.Rb7#
- 2.Re7#
- 2.Rc8#
- 2.Qg5#
- 1...Qd5
- 2.Be7#
- 2.Rc5#
- 2.Rc8#
- 1...Qa6
- 2.Be7#
- 2.Rc8#
- 2.Qg5#
- 1...Qc6
- 2.Be7#
- 2.Rxc6#
- 2.Rc8#
- 2.Qg5#
- 1...Qa8
- 2.Be7#
- 2.Ra7#
- 2.Rc8#
- 2.Qg5#
- 2.Qxa8#
- 1...Qc8
- 2.Be7#
- 2.Rd7#
- 2.Rxc8#
- 2.Qg5#
- 1...Qb1
- 2.Be7#
- 2.Rc8#
- 2.Qg5#
- 1...Qb2
- 2.Be7#
- 2.Rc8#
- 1...Qb3
- 2.Be7#
- 2.Rc8#
- 2.Qg5#
- 1...Qb4
- 2.Rc8#
- 2.Qg5#
- 1...Qb5
- 2.Be7#
- 2.Rc8#
- 1...Qb6
- 2.Rc8#
- 2.Qg5#
- 1...Qa7
- 2.Be7#
- 2.Rxa7#
- 2.Qg5#
- 1...Qb8
- 2.Be7#
- 2.Rc8#
- 2.Qg5#
- 1...Qf3+!
- threat
- 1.Qa8+?
- 1...Qc8
- 2.Rd7#
- 2.Rxc8#
- 2.Qxc8#
- 1...Qb8
- 2.Qxb8#
- 1...Qxa8!
- 1...Qc8
- 1.Qc4?
- Keys
- 1.Qd5!
- threat
- 2.Qg5#
- 1...Qxc7+
- 2.Be7#
- 1...Qxd5
- 2.Rc8#
- 1...Qb2
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Rc8#
- 1...Qb5
- 2.Rc8#
- threat
- 1.Qd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(a);N_PINR(D)::R1(D)
- Q(a);N_PINR(D),P_PINB(C)::R1(D)
- Q(a);N_GUARD,N_PINR(D)::QAR(A),XQ(a)
- Q(a);N_PINR(D)::R1(D),XQ(a)
- Tries
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(a);N_PINR(D)::QAB(A)
- Refutation
- Q(a);CHECK,N_PINR(D)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(a);CHECK,SBLOCK,XR(D)::QAR(A)+B(B),DCHECK
- Q(a);N_PINR(D)::R1(D)
- Q(a);N_PINR(D),P_PINB(C)::R1(D)
- Refutation
- Q(a);CHECK,N_PINR(D)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATE,XR(D)::B(B),XQ(a)
- Refutation
- Q(a);CHECK,N_PINR(D)
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- Q(a);CHECK,N_PINR(D)
- Try
- Q(A);CHECK
- Vars
- Q(a);N_GUARD,N_PINR(D),P_SPINQ(a)::QAR2(A),XQ(a)
- Refutation
- Q(a);N_PINR(D),XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- Q(a);CHECK,SBLOCK,XR(D)::QAR(A)+B(B),DCHECK
- Q(a);N_PINR(D),P_PINB(C),XQ(A)::R1(D)
- Q(a);N_PINR(D)::R1(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).