MESON Chess Problem Database
Problem Display
PID: 16254 (8/K1P5/b2RP3/pNk1P3/B1n4q/PQ2n2r/8/2R3B1 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
The Problemist, 2000
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Rxc4#
- 2.Qxc4#
- 1...Qg3
- 2.Rxc4#
- 2.Qxc4#
- 1...Qg5
- 2.Rxc4#
- 2.Qxc4#
- 1...Qf6
- 2.Rxc4#
- 2.Qxc4#
- 1...Qe7
- 2.Rxc4#
- 2.Qxc4#
- 1...Qd8
- 2.Rxc4#
- 2.Qxc4#
- 1...Qh5
- 2.Rxc4#
- 2.Qxc4#
- 1...Qh6
- 2.Rxc4#
- 2.Qxc4#
- 1...Qh7
- 2.Rxc4#
- 2.Qxc4#
- 1...Qh8
- 2.Rxc4#
- 2.Qxc4#
- 1...Bxb5
- 2.Qxb5#
- 1...Qe1
- Tries
- 1.Kxa6?
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qe1
- 2.Rxc4#
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qf2
- 2.c8Q#
- 2.c8R#
- 1...Qg3
- 2.Rxc4#
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qg5
- 2.Rxc4#
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qf6
- 2.Rxc4#
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qe7
- 2.Rxc4#
- 2.Qxc4#
- 1...Qd8
- 2.Rxc4#
- 2.Qxc4#
- 1...Qd4
- 2.c8Q#
- 2.c8R#
- 1...Qf4
- 2.c8Q#
- 2.c8R#
- 1...Qg4
- 2.c8Q#
- 2.c8R#
- 1...Qh5
- 2.Rxc4#
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qh6
- 2.Rxc4#
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qh7
- 2.Rxc4#
- 2.Qxc4#
- 1...Qh8
- 2.Rxc4#
- 2.Qxc4#
- 1...Rh1
- 2.c8Q#
- 2.c8R#
- 1...Rh2
- 2.c8Q#
- 2.c8R#
- 1...Rf3
- 2.c8Q#
- 2.c8R#
- 1...Rg3
- 2.c8Q#
- 2.c8R#
- 1...Qe4!
- threat
- 1.Sd4?
- threat
- 2.Qb6#
- 1...Bb5
- 2.Qxb5#
- 1...Sd5
- 2.Rc6#
- 1...Sc2!
- threat
- 1.Bxe3+?
- 1...Qd4
- 2.Bxd4#
- 2.Rxc4#
- 2.Qxc4#
- 1...Rxe3!
- 1...Qd4
- 1.Qxe3+?
- 1...Qd4
- 2.Qxd4#
- 1...Rxe3!
- 1...Qd4
- 1.Kxa6?
- Keys
- 1.Sc3!
- threat
- 2.Rd5#
- 1...Sxd6
- 2.Qd5#
- 1...Qf2
- 2.Se4#
- 1...Qd8
- 2.Se4#
- 1...Qd4
- 2.Rc6#
- 1...Qe4
- 2.Sxe4#
- 1...Bb5
- 2.Qxb5#
- 1...Bb7
- 2.Qb5#
- 1...Sb6
- 2.Se4#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- B(g);OGATE,XS(F)::QAR1(D),XB(g)
- Tries
- Try
- K(J);P-FLIGHT,XB(g)
- Threat
- P=Q
- Vars
- Q(d);N_SPINS(a),P_SPINS(c)::P=Q
- Q(d);::P=Q
- R(b);::P=Q
- Refutation
- Q(d);
- Try
- S(F);N_PINS(a),P_PINS(c)
- Threat
- QAB1(D)
- Vars
- B(g);N_GUARD::QAR1(D),XB(g)
- S(a);SBLOCK::R1(H)
- Refutation
- S(a);N_SPINS(c)
- Try
- B(B);CHECK,P_PINS(c),XS(a)
- Refutation
- R(b);XB(B)
- Try
- Q(D);CHECK,P_PINS(c),XS(a)
- Vars
- Q(d);N_GUARD,P_SPINQ(d)::QAB1(D),XQ(d)
- Refutation
- R(b);P_SPINR(b),XQ(D)
- Try
- Actual
- S(F);
- Threat
- R1(H)
- Vars
- S(c);OGATE,XR(H)::QAR1(D)
- Q(d);N_GUARD,N_SPINS(a)::S(F)
- Q(d);N_GUARD::S(F)
- Q(d);N_SPINS(a),SBLOCK::R1(H)
- Q(d);N_GUARD::S(F),XQ(d)
- B(g);N_GUARD::QAR1(D),XB(g)
- B(g);N_GUARD::QAR1(D)
- S(c);::R(A)+S(F),DCHECK
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).