MESON Chess Problem Database
Problem Display
PID: 172500 (k4KQ1/rb6/8/8/8/8/1R6/1R6 w - - 0 1)
Andreev, Aleksandr Grigorevich
Kuban segodniya, 2001
#2
4 + 3
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bh1
- 2.Rb8#
- 1...Bg2
- 2.Rb8#
- 1...Bf3
- 2.Rb8#
- 1...Be4
- 2.Rb8#
- 1...Bd5
- 2.Rb8#
- 1...Ba6
- 2.Rb8#
- 1...Bc6
- 2.Rb8#
- 1...Bc8
- 2.Rb8#
- 1...Bh1
- Tries
- 1.Rxb7?
- threat
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 2.Rb8#
- 1...Ra1
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 1...Ra2
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 2.Qxa2#
- 1...Ra3
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 1...Ra4
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 1...Ra5
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 1...Ra6
- 2.Ke7#
- 2.Kf7#
- 2.Kg7#
- 1...Rxb7!
- threat
- 1.Qb3?
- 1...Ra1
- 2.Qxb7#
- 1...Ra2
- 2.Qxb7#
- 1...Ra3
- 2.Qxb7#
- 1...Ra4
- 2.Qxb7#
- 1...Ra5
- 2.Qxb7#
- 1...Ra6
- 2.Qxb7#
- 1...Bh1
- 2.Qb8#
- 1...Bg2
- 2.Qb8#
- 1...Bf3
- 2.Qb8#
- 1...Be4
- 2.Qb8#
- 1...Bd5
- 2.Qb8#
- 1...Ba6
- 2.Qb8#
- 1...Bc6
- 2.Qb8#
- 1...Bc8
- 2.Qb8#
- 1...Kb8!
- 1...Ra1
- 1.Qf7?
- 1...Ra1
- 2.Qxb7#
- 1...Ra2
- 2.Qxb7#
- 1...Ra3
- 2.Qxb7#
- 1...Ra4
- 2.Qxb7#
- 1...Ra5
- 2.Qxb7#
- 1...Ra6
- 2.Qxb7#
- 1...Bh1
- 2.Rb8#
- 2.Qe8#
- 1...Bg2
- 2.Rb8#
- 2.Qe8#
- 1...Bf3
- 2.Rb8#
- 2.Qe8#
- 1...Be4
- 2.Rb8#
- 2.Qe8#
- 1...Bd5
- 2.Rb8#
- 2.Qe8#
- 1...Ba6
- 2.Rb8#
- 1...Bc6
- 2.Rb8#
- 1...Bc8
- 2.Rb8#
- 1...Kb8!
- 1...Ra1
- 1.Qh7?
- 1...Ra1
- 2.Qxb7#
- 1...Ra2
- 2.Qxb7#
- 1...Ra3
- 2.Qxb7#
- 1...Ra4
- 2.Qxb7#
- 1...Ra5
- 2.Qxb7#
- 1...Ra6
- 2.Qxb7#
- 1...Bh1
- 2.Rb8#
- 1...Bg2
- 2.Rb8#
- 1...Bf3
- 2.Rb8#
- 1...Be4
- 2.Rb8#
- 1...Bd5
- 2.Rb8#
- 1...Ba6
- 2.Rb8#
- 1...Bc6
- 2.Rb8#
- 1...Bc8
- 2.Rb8#
- 1...Kb8!
- 1...Ra1
- 1.Qg2?
- 1...Bxg2
- 2.Rb8#
- 1...Ra1
- 2.Qxb7#
- 1...Ra2
- 2.Qxb7#
- 1...Ra3
- 2.Qxb7#
- 1...Ra4
- 2.Qxb7#
- 1...Ra5
- 2.Qxb7#
- 1...Ra6
- 2.Qxb7#
- 1...Bf3
- 2.Rb8#
- 1...Be4
- 2.Rb8#
- 1...Bd5
- 2.Rb8#
- 1...Bc6
- 2.Rb8#
- 1...Kb8!
- 1...Bxg2
- 1.Qg7?
- 1...Ra1
- 2.Qxb7#
- 1...Ra2
- 2.Qxb7#
- 1...Ra3
- 2.Qxb7#
- 1...Ra4
- 2.Qxb7#
- 1...Ra5
- 2.Qxb7#
- 1...Ra6
- 2.Qxb7#
- 1...Bh1
- 2.Rb8#
- 1...Bg2
- 2.Rb8#
- 1...Bf3
- 2.Rb8#
- 1...Be4
- 2.Rb8#
- 1...Bd5
- 2.Rb8#
- 1...Ba6
- 2.Rb8#
- 1...Bc6
- 2.Rb8#
- 1...Bc8
- 2.Rb8#
- 1...Kb8!
- 1...Ra1
- 1.Rxb7?
- Keys
- 1.Qd5!
- 1...Kb8
- 2.Qd8#
- 1...Bxd5
- 2.Rb8#
- 1...Ra1
- 2.Qxb7#
- 1...Ra2
- 2.Qxb7#
- 1...Ra3
- 2.Qxb7#
- 1...Ra4
- 2.Qxb7#
- 1...Ra5
- 2.Qxb7#
- 1...Ra6
- 2.Qxb7#
- 1...Bc6
- 2.Rb8#
- 2.Qd8#
- 1...Kb8
- 1.Qd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 7
- Sets
- B(b);OGATE::R1(B)
- Tries
- Try
- R(B);XB(b)
- Threat
- DUALS(4)
- Refutation
- R(a);XR(B)
- Try
- Q(D);
- Vars
- R(a);N_GUARD::QAB1(D),XB(b)
- B(b);OGATE::QAR1(D)
- Refutation
- K(c);P-FLIGHT,P_SPINB(b)
- Try
- Q(D);
- Vars
- R(a);N_GUARD::QAB1(D),XB(b)
- B(b);OGATE::R1(B)
- Refutation
- K(c);P-FLIGHT,P_SPINB(b)
- Try
- Q(D);
- Vars
- R(a);N_GUARD::QAB1(D),XB(b)
- B(b);OGATE::R1(B)
- Refutation
- K(c);P-FLIGHT,P_SPINB(b)
- Try
- Q(D);P_PINB(b)
- Vars
- B(b);N_SPINB(b),OGATE,XQ(D)::R1(B)
- R(a);N_GUARD::QAB1(D),XB(b)
- B(b);OGATE::R1(B)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(D);
- Vars
- R(a);N_GUARD::QAB1(D),XB(b)
- B(b);OGATE::R1(B)
- Refutation
- K(c);P-FLIGHT,P_SPINB(b)
- Try
- Actual
- Q(D);P_PINB(b)
- Vars
- K(c);P-FLIGHT::QAR2(D)
- B(b);N_SPINB(b),OGATE,XQ(D)::R1(B)
- R(a);N_GUARD::QAB1(D),XB(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).