MESON Chess Problem Database
Problem Display
PID: 174892 (8/1b6/4R3/2Q2K2/k7/1p6/8/3B4 w - - 0 1)
Lincoln, Robert A
Die Schwalbe, 2017
#2
4 + 3
SOLUTION
- SOUND
- Sets
- 1...Bh1
- 2.Ra6#
- 1...Bg2
- 2.Ra6#
- 1...Bf3
- 2.Ra6#
- 1...Be4+
- 2.Rxe4#
- 1...Bd5
- 2.Ra6#
- 1...Ba6
- 2.Rxa6#
- 1...Ba8
- 2.Ra6#
- 1...Bh1
- Tries
- 1.Kf4?
- 1...Bh1
- 2.Ra6#
- 1...Bg2
- 2.Ra6#
- 1...Bf3
- 2.Ra6#
- 1...Be4
- 2.Rxe4#
- 2.Ra6#
- 1...Bd5
- 2.Ra6#
- 1...Ba6
- 2.Rxa6#
- 1...Ba8
- 2.Ra6#
- 1...Bc8
- 2.Re4#
- 1...Bc6!
- 1...Bh1
- 1.Kg5?
- 1...Bh1
- 2.Ra6#
- 1...Bg2
- 2.Ra6#
- 1...Bf3
- 2.Ra6#
- 1...Be4
- 2.Rxe4#
- 2.Ra6#
- 1...Bd5
- 2.Ra6#
- 1...Ba6
- 2.Rxa6#
- 1...Ba8
- 2.Ra6#
- 1...Bc8
- 2.Re4#
- 1...Bc6!
- 1...Bh1
- 1.Kf6?
- 1...Bh1
- 2.Ra6#
- 1...Bg2
- 2.Ra6#
- 1...Bf3
- 2.Ra6#
- 1...Be4
- 2.Rxe4#
- 2.Ra6#
- 1...Bd5
- 2.Ra6#
- 1...Ba6
- 2.Rxa6#
- 1...Ba8
- 2.Ra6#
- 1...Bc8
- 2.Re4#
- 1...Bc6!
- 1...Bh1
- 1.Kg6?
- 1...Be4+
- 2.Rxe4#
- 1...Bh1
- 2.Ra6#
- 1...Bg2
- 2.Ra6#
- 1...Bf3
- 2.Ra6#
- 1...Bd5
- 2.Ra6#
- 1...Ba6
- 2.Rxa6#
- 1...Ba8
- 2.Ra6#
- 1...Bc8
- 2.Re4#
- 1...Bc6!
- 1...Be4+
- 1.Re2?
- threat
- 2.Ra2#
- 1...Be4+
- 2.Rxe4#
- 1...Bc8+!
- threat
- 1.Qa3+?
- 1...Kb5
- 2.Be2#
- 1...Kxa3!
- 1...Kb5
- 1.Qc4+?
- 1...Ka3
- 2.Qxb3#
- 1...Ka5!
- 1...Ka3
- 1.Qb5+?
- 1...Ka3
- 2.Qxb3#
- 1...Kxb5!
- 1...Ka3
- 1.Kf4?
- Keys
- 1.Bf3!
- 1...Be4+
- 2.Rxe4#
- 1...Bxf3
- 2.Ra6#
- 1...b2
- 2.Bd1#
- 1...Bc6
- 2.Bxc6#
- 1...Bd5
- 2.Ra6#
- 1...Ba6
- 2.Rxa6#
- 1...Ba8
- 2.Ra6#
- 1...Bc8
- 2.Bc6#
- 1...Be4+
- 1.Bf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(c);N_GUARD::R(D)
- B(c);CHECK,N_GUARD::R(D),XB(c)
- B(c);N_GUARD::R(D),XB(c)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- B(c);N_GUARD::R(D)
- B(c);N_GUARD::R(D),XB(c)
- Refutation
- B(c);
- Try
- K(C);P-FLIGHT
- Vars
- B(c);N_GUARD::R(D)
- B(c);N_GUARD::R(D),XB(c)
- Refutation
- B(c);
- Try
- K(C);P-FLIGHT
- Vars
- B(c);N_GUARD::R(D)
- B(c);N_GUARD::R(D),XB(c)
- Refutation
- B(c);
- Try
- K(C);S_FLIGHT
- Vars
- B(c);CHECK,N_GUARD::R(D),XB(c)
- B(c);N_GUARD::R(D)
- B(c);N_GUARD::R(D),XB(c)
- Refutation
- B(c);
- Try
- R(D);
- Threat
- R(D)
- Vars
- B(c);CHECK,N_GUARD::R(D),XB(c)
- Refutation
- B(c);CHECK
- Try
- Q(B);CHECK
- Vars
- K(b);N_SPINP(a),S_FLIGHT::B(A)
- Refutation
- K(b);N_SPINP(a),P-FLIGHT,XQ(B)
- Try
- Q(B);CHECK
- Vars
- K(b);N_SPINP(a),P-FLIGHT::QAR1(B),XP(a)
- Refutation
- K(b);N_SPINP(a),P-FLIGHT
- Try
- Q(B);CHECK
- Vars
- K(b);N_SPINP(a),P-FLIGHT::QAR1(B),XP(a)
- Refutation
- K(b);N_SPINP(a),S_FLIGHT,XQ(B)
- Try
- Actual
- B(A);N_PINP(a)
- Vars
- B(c);CHECK,N_GUARD::R(D),XB(c)
- B(c);N_GUARD,XB(A)::R(D)
- P(a);OGATEB::B(A)
- B(c);N_GUARD::B(A),XB(c)
- B(c);N_GUARD::R(D)
- B(c);N_GUARD::R(D),XB(c)
- B(c);N_GUARD,P_PINR(D)::B(A)
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).