MESON Chess Problem Database
Problem Display
PID: 172442 (4B3/8/1Q5b/6p1/7k/8/7K/3b4 w - - 0 1)
Andreev, Aleksandr Grigorevich
Kuban segodniya, 1997
#2
3 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bg4
- 2.Qf2#
- 1...g4
- 2.Qxh6#
- 1...Bg4
- Tries
- 1.Qe3?
- threat
- 2.Qg3#
- 2.Qh3#
- 1...Kg4
- 2.Qe4#
- 1...Bg4
- 2.Qf2#
- 2.Qe1#
- 2.Qg3#
- 1...g4
- 2.Qxh6#
- 1...Bf3!
- threat
- 1.Qd4+?
- 1...Bg4
- 2.Qf2#
- 1...g4!
- 1...Bg4
- 1.Qb4+?
- 1...Bg4
- 2.Qe1#
- 1...g4!
- 1...Bg4
- 1.Qd6?
- threat
- 2.Qg3#
- 1...g4
- 2.Qxh6#
- 1...Kg4!
- threat
- 1.Qxh6+?
- 1...Bh5
- 2.Qxh5#
- 1...Kg4!
- 1...Bh5
- 1.Qe3?
- Keys
- 1.Qe6!
- threat
- 2.Qh3#
- 1...g4
- 2.Qxh6#
- 1...Bg4
- 2.Qe1#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(a);SBLOCK::QAB(B)
- P(c);SBLOCK,S_CUTB(a)::QAR2(B),XB(d)
- Tries
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT::QAR2(B)
- P(c);OGATE,SBLOCK::QAR2(B),XB(d)
- Refutation
- B(a);
- Try
- Q(B);CHECK
- Vars
- B(a);P_SPINB(a),SBLOCK::QAB(B)
- Refutation
- P(c);P_SPINP(c)
- Try
- Q(B);CHECK
- Vars
- B(a);P_SPINB(a),SBLOCK::QAB(B)
- Refutation
- P(c);P_SPINP(c)
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- P(c);SBLOCK,S_CUTB(a)::QAR2(B),XB(d)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);CHECK,XB(d)
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(B);
- Threat
- QAR1(B)
- Vars
- P(c);SBLOCK,S_CUTB(a)::QAR2(B),XB(d)
- B(a);SBLOCK::QAB(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).