MESON Chess Problem Database
Problem Display
PID: 230397 (k7/1bK5/q7/8/8/6p1/R7/6Q1 w - - 0 1)
Matthaus, Hans Georg
Deutsche Schachzeitung, 1982
#2
3 + 4
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa7
- 2.Rxa7#
- 2.Qxa7#
- 1...Bh1
- 2.Rxa6#
- 1...Bg2
- 2.Rxa6#
- 1...Bf3
- 2.Rxa6#
- 1...Be4
- 2.Rxa6#
- 1...Bd5
- 2.Rxa6#
- 1...Bc6
- 2.Rxa6#
- 1...Qa7
- Tries
- 1.Qb6?
- threat
- 2.Qxb7#
- 1...Bh1
- 2.Rxa6#
- 2.Qxa6#
- 2.Qb8#
- 1...Bg2
- 2.Rxa6#
- 2.Qxa6#
- 2.Qb8#
- 1...Bf3
- 2.Rxa6#
- 2.Qxa6#
- 2.Qb8#
- 1...Be4
- 2.Rxa6#
- 2.Qxa6#
- 2.Qb8#
- 1...Bd5
- 2.Rxa6#
- 2.Qxa6#
- 2.Qb8#
- 1...Bc6
- 2.Rxa6#
- 2.Qxa6#
- 2.Qb8#
- 1...Bc8
- 2.Qb8#
- 1...Qa5!
- threat
- 1.Qb1?
- threat
- 2.Qxb7#
- 1...Ka7
- 2.Qxb7#
- 1...Bh1
- 2.Rxa6#
- 2.Qb8#
- 1...Bg2
- 2.Rxa6#
- 2.Qb8#
- 1...Bf3
- 2.Rxa6#
- 2.Qb8#
- 1...Be4
- 2.Rxa6#
- 2.Qb8#
- 1...Bd5
- 2.Rxa6#
- 2.Qb8#
- 1...Bc6
- 2.Rxa6#
- 2.Qb8#
- 1...Bc8
- 2.Qb8#
- 1...Qa5+!
- threat
- 1.Qh1?
- threat
- 2.Rxa6#
- 2.Qxb7#
- 1...Qa5+
- 2.Rxa5#
- 1...Ka7
- 2.Qxb7#
- 1...Qxa2
- 2.Qxb7#
- 1...Bxh1
- 2.Rxa6#
- 1...Qa3
- 2.Rxa3#
- 2.Qxb7#
- 1...Qa4
- 2.Rxa4#
- 2.Qxb7#
- 1...Qa7
- 2.Qxb7#
- 1...Bg2
- 2.Rxa6#
- 1...Bf3
- 2.Rxa6#
- 1...Be4
- 2.Rxa6#
- 1...Bd5
- 2.Rxa6#
- 1...Bc6
- 2.Rxa6#
- 1...g2!
- threat
- 1.Qb6?
- Keys
- 1.Qg2!
- threat
- 2.Rxa6#
- 2.Qxb7#
- 1...Qa5+
- 2.Rxa5#
- 1...Ka7
- 2.Qxb7#
- 1...Qxa2
- 2.Qxb7#
- 1...Bxg2
- 2.Rxa6#
- 1...Qa3
- 2.Rxa3#
- 2.Qxb7#
- 1...Qa4
- 2.Rxa4#
- 2.Qxb7#
- 1...Qa7
- 2.Qxb7#
- 1...Bf3
- 2.Rxa6#
- 1...Be4
- 2.Rxa6#
- 1...Bd5
- 2.Rxa6#
- 1...Bc6
- 2.Rxa6#
- threat
- 1.Qg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(c);N_GUARD::R(B),XQ(b)
- Tries
- Try
- Q(A);
- Threat
- QAB1(A),XB(c)
- Vars
- B(c);OGATE::QAR1(A)
- Refutation
- Q(b);P_PINQ(A)
- Try
- Q(A);
- Threat
- QAB1(A),XB(c)
- Vars
- K(d);P-FLIGHT::QAR1(A),XB(c)
- B(c);OGATE::QAR1(A)
- Refutation
- Q(b);CHECK
- Try
- Q(A);P_PINB(c)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- K(d);N_SPINB(c),P-FLIGHT::QAR1(A),XB(c)
- Q(b);N_SPINQ(b),XR(B)::QAB1(A),XB(c)
- B(c);N_SPINB(c),XQ(A)::R(B),XQ(b)
- Q(b);::QAB1(A),XB(c)
- B(c);::R(B),XQ(b)
- Refutation
- P(a);N_SPINB(c)
- Try
- Actual
- Q(A);P_PINB(c)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,OGATEB::R(B),XQ(b)
- K(d);N_SPINB(c),P-FLIGHT::QAR1(A),XB(c)
- Q(b);N_SPINQ(b),XR(B)::QAB1(A),XB(c)
- B(c);N_SPINB(c),XQ(A)::R(B),XQ(b)
- Q(b);::QAB1(A),XB(c)
- B(c);::R(B),XQ(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).