MESON Chess Problem Database
Problem Display
PID: 44463 (kr5R/rp6/6K1/8/4Q3/8/8/R7 w - - 0 1)
Herlin, Theodore Adrien Louis
Schachzeitung der Berliner Schachgesellschaft, 1852
#2
4 + 4
| 5656 | Sammlung Leichterer Schachaufgaben I (Dufresne) | 1881 |
| 20 | De Problemist | 1932 |
| 23 | Die Schwalbe | 1965 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...Ra4
- 2.Rxa4#
- 2.Qxa4#
- 1...Ra5
- 2.Rxa5#
- 1...Ra6+
- 2.Rxa6#
- 1...Rc8
- 2.Rxc8#
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Rxe8#
- 2.Qxe8#
- 1...Rf8
- 2.Rxf8#
- 1...Rg8+
- 2.Rxg8#
- 1...Ra2
- Tries
- 1.Ra4?
- 1...Ra6+
- 2.Rxa6#
- 1...Rg8+
- 2.Rxg8#
- 1...Rxa4
- 2.Qxa4#
- 1...Ra5
- 2.Rxa5#
- 1...Rc8
- 2.Rxc8#
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Rxe8#
- 2.Qxe8#
- 1...Rf8
- 2.Rxf8#
- 1...Rxh8!
- 1...Ra6+
- 1.Re8?
- 1...Ra6+
- 2.Rxa6#
- 1...Rxe8
- 2.Qxe8#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...Ra4
- 2.Rxa4#
- 2.Qxa4#
- 1...Ra5
- 2.Rxa5#
- 1...Rc8
- 2.Rxc8#
- 1...Rd8
- 2.Rxd8#
- 1...Rxa1!
- 1...Ra6+
- 1.Qa4?
- threat
- 2.Qxa7#
- 1...Rg8+
- 2.Rxg8#
- 1...Rxa4
- 2.Rxa4#
- 1...Ra5
- 2.Qxa5#
- 1...Ra6+!
- threat
- 1.Qd4?
- threat
- 2.Rxa7#
- 2.Qxa7#
- 1...Rg8+
- 2.Rxg8#
- 1...Rxa1
- 2.Qxa1#
- 1...Rxh8
- 2.Qxa7#
- 2.Qxh8#
- 1...Rc8
- 2.Rxc8#
- 2.Qxa7#
- 1...Rd8
- 2.Rxd8#
- 2.Qxa7#
- 2.Qxd8#
- 1...Re8
- 2.Rxe8#
- 2.Qxa7#
- 1...Rf8
- 2.Rxf8#
- 2.Qxa7#
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...Ra4
- 2.Rxa4#
- 2.Qxa4#
- 1...Ra5
- 2.Rxa5#
- 1...Ra6+!
- threat
- 1.Qe5?
- threat
- 2.Rxb8#
- 2.Qxb8#
- 1...Rg8+
- 2.Rxg8#
- 1...Rxa1
- 2.Qxa1#
- 2.Qxb8#
- 1...Rxh8
- 2.Qxh8#
- 1...Ra2
- 2.Rxa2#
- 2.Qxb8#
- 1...Ra3
- 2.Rxa3#
- 2.Qxb8#
- 1...Ra4
- 2.Rxa4#
- 2.Qxb8#
- 1...Ra5
- 2.Rxa5#
- 2.Qxb8#
- 2.Qxa5#
- 1...Rc8
- 2.Rxc8#
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Rxe8#
- 2.Qxe8#
- 1...Rf8
- 2.Rxf8#
- 1...Ra6+!
- threat
- 1.Qe8?
- threat
- 2.Qxb8#
- 1...Rxe8
- 2.Rxe8#
- 1...Rc8
- 2.Qxc8#
- 1...Rd8
- 2.Qxd8#
- 1...Ra6+!
- threat
- 1.Ra4?
- Keys
- 1.Qh1!
- 1...Ra6+
- 2.Rxa6#
- 1...Rg8+
- 2.Rxg8#
- 1...Rxa1
- 2.Qxa1#
- 1...Rxh8
- 2.Qxh8#
- 1...Ra2
- 2.Rxa2#
- 1...Ra3
- 2.Rxa3#
- 1...Ra4
- 2.Rxa4#
- 1...Ra5
- 2.Rxa5#
- 1...Rc8
- 2.Rxc8#
- 1...Rd8
- 2.Rxd8#
- 1...Re8
- 2.Rxe8#
- 1...Rf8
- 2.Rxf8#
- 1...Ra6+
- 1.Qh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(a);OGATEB::R(A),XR(a)
- R(a);CHECK,OGATEB::R(A),XR(a)
- R(d);OGATEB::R(D),XR(d)
- R(d);CHECK,OGATEB::R(D),XR(d)
- Tries
- Try
- R(A);
- Vars
- R(a);CHECK,OGATEB::R(A),XR(a)
- R(d);CHECK,OGATEB::R(D),XR(d)
- R(a);N_SPINR(a),OGATE,P_SPINR(d),XR(A)::QAR(B),XR(a)
- R(a);OGATEB::R(A),XR(a)
- R(d);OGATEB::R(D),XR(d)
- Refutation
- R(d);XR(D)
- Try
- R(D);
- Vars
- R(a);CHECK,OGATEB::R(A),XR(a)
- R(d);OGATE,XR(D)::QAR(B),XR(d)
- R(a);OGATEB::R(A),XR(a)
- R(d);OGATEB::R(D),XR(d)
- Refutation
- R(a);N_SPINR(a),P_SPINR(d),XR(A)
- Try
- Q(B);N_PINP(b)
- Threat
- QAR1(B),XR(a)
- Vars
- R(d);CHECK,OGATEB::R(D),XR(d)
- R(a);OGATE,XQ(B)::R(A),XR(a)
- R(a);OGATEB::QAR(B),XR(a)
- Refutation
- R(a);CHECK
- Try
- Q(B);N_PINP(b)
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,OGATEB::R(D),XR(d)
- R(a);N_SPINR(a),OGATE,P_SPINR(d),XR(A)::QAB(B),XR(a)
- R(a);OGATEB::R(A),XR(a)
- Refutation
- R(a);CHECK
- Try
- Q(B);N_PINP(b)
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,OGATEB::R(D),XR(d)
- R(d);OGATE,XR(D)::QAB1(B),XR(d)
- R(d);OGATEB::R(D),XR(d)
- Refutation
- R(a);CHECK
- Try
- Q(B);N_PINP(b)
- Threat
- QAR1(B),XR(d)
- Vars
- R(d);OGATE,XQ(B)::R(D),XR(d)
- R(d);OGATEB::QAR2(B),XR(d)
- R(d);OGATEB::QAR(B),XR(d)
- Refutation
- R(a);CHECK
- Try
- Actual
- Q(B);
- Vars
- R(a);CHECK,OGATEB::R(A),XR(a)
- R(d);CHECK,OGATEB::R(D),XR(d)
- R(a);N_SPINR(a),OGATE,P_SPINR(d),XR(A)::QAB(B),XR(a)
- R(d);OGATE,XR(D)::QAB1(B),XR(d)
- R(a);OGATEB::R(A),XR(a)
- R(d);OGATEB::R(D),XR(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).