MESON Chess Problem Database
Problem Display
PID: 11383 (8/5N2/3RP3/3n3R/BP1NkP2/K2n4/3Q1rp1/6B1 w - - 0 1)
Larsen, Karl Adolf Koefoed
Aarsskrift for DSK, 1938
#2
11 + 5
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Rf3
- 2.Sg5#
- 1...Sc1
- 2.Sg5#
- 2.Re5#
- 1...Se1
- 2.Sg5#
- 2.Re5#
- 1...Sb2
- 2.Sg5#
- 2.Re5#
- 1...S3xb4
- 2.Sg5#
- 2.Re5#
- 1...S3xf4
- 2.Re5#
- 1...Sc5
- 2.Sg5#
- 2.Re5#
- 1...Se5
- 2.Sg5#
- 2.Rxe5#
- 1...Sc3
- 2.Sg5#
- 1...S5xb4
- 2.Sg5#
- 1...Sb6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Sg5#
- 1...Se7
- 2.Sg5#
- 1...Rf1
- Tries
- 1.Re5+?
- 1...Sxe5
- 2.Sg5#
- 1...Kxd4!
- 1...Sxe5
- 1.Rf5?
- 1...Rxd2
- 2.Sg5#
- 1...Rxf4
- 2.Sg5#
- 1...S3xb4
- 2.Sg5#
- 2.Re5#
- 1...S3xf4
- 2.Sg5#
- 2.Re5#
- 1...S5xb4
- 2.Sg5#
- 1...S5xf4
- 2.Sg5#
- 1...Rf1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Rf3
- 2.Sg5#
- 1...Sc1
- 2.Sg5#
- 2.Re5#
- 1...Se1
- 2.Sg5#
- 2.Re5#
- 1...Sb2
- 2.Sg5#
- 2.Re5#
- 1...Sc5
- 2.Sg5#
- 2.Re5#
- 1...Se5
- 2.Sg5#
- 2.Rxe5#
- 1...Sc3
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 1...Sb6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Sg5#
- 1...Se7
- 2.Sg5#
- 1...Kxd4!
- 1...Rxd2
- 1.Rdxd5?
- threat
- 2.Sd6#
- 1...Se5
- 2.Rdxe5#
- 2.Rhxe5#
- 1...Rxd2!
- threat
- 1.Qxd3+?
- 1...Kxf4
- 2.Rh4#
- 1...Kxd3!
- 1...Kxf4
- 1.Re5+?
- Keys
- 1.Rh4!
- 1...Kxd4
- 2.f5#
- 1...Rxd2
- 2.Sg5#
- 1...Rxf4
- 2.Qxg2#
- 1...S3xb4
- 2.Sg5#
- 1...S3xf4
- 2.Bc2#
- 1...S5xb4
- 2.Sg5#
- 1...S5xf4
- 2.Bc6#
- 1...Rf1
- 2.Sg5#
- 1...Re2
- 2.Sg5#
- 1...Rf3
- 2.Sg5#
- 1...Sc1
- 2.Sg5#
- 1...Se1
- 2.Sg5#
- 1...Sb2
- 2.Sg5#
- 1...Sc5
- 2.Sg5#
- 1...Se5
- 2.Sg5#
- 1...Sc3
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 1...Sb6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Sg5#
- 1...Se7
- 2.Sg5#
- 1...Kxd4
- 1.Rh4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- R(a);::S(K)
- S(c);N_GUARD,XP(G)::R1(H)
- S(e);::S(K)
- S(e);XP(E)::S(K)
- Tries
- Try
- R(H);CHECK
- Vars
- S(c);XR(H)::S(K)
- Refutation
- K(d);P-FLIGHT,P_SPINR(a),P_SPINS(c),XS(F)
- Try
- R(H);
- Vars
- R(a);XQ(B)::S(K)
- R(a);XP(G)::S(K)
- S(e);XP(E)::S(K)
- S(e);XP(G)::S(K)
- R(a);::S(K)
- S(e);::S(K)
- Refutation
- K(d);P-FLIGHT,P_SPINR(a),P_SPINS(c),XS(F)
- Try
- R(I);XS(e)
- Threat
- S(K)
- Refutation
- R(a);XQ(B)
- Try
- Q(B);CHECK,XS(c)
- Vars
- K(d);P-FLIGHT,XP(G)::R(H)
- Refutation
- K(d);S_FLIGHT,XQ(B)
- Try
- Actual
- R(H);
- Vars
- K(d);P-FLIGHT,P_SPINR(a),P_SPINS(c),XS(F)::R(H)+P(G)
- R(a);XQ(B)::S(K)
- R(a);OGATE,P_SPINR(a),XP(G)::QAB(B),XP(b)
- S(c);XP(E)::S(K)
- S(c);OGATEB,P_SPINS(c),XP(G)::B(D)
- S(e);XP(E)::S(K)
- S(e);OGATEB,P_SPINS(e),XP(G)::B(D)
- R(a);::S(K)
- S(c);::S(K)
- S(e);::S(K)
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).