MESON Chess Problem Database
Problem Display
PID: 18563 (1n1NK1b1/1Pp1pp2/3k4/2R1bQ1r/1P1NRn2/8/7B/5q2 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1956
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Sb5#
- 1...Qh3
- 2.Sb5#
- 1...Qb5+
- 2.Sxb5#
- 1...Qa1
- 2.Sb5#
- 1...Qb1
- 2.Sb5#
- 1...Qc1
- 2.Sb5#
- 1...Qd1
- 2.Sb5#
- 1...Qe1
- 2.Sb5#
- 1...Qg1
- 2.Sb5#
- 1...Qh1
- 2.Sb5#
- 1...Qf2
- 2.Sb5#
- 1...Qf3
- 2.Sb5#
- 1...Rxh2
- 2.Qxe5#
- 1...Rh3
- 2.Qxe5#
- 1...Rh4
- 2.Qxe5#
- 1...Rxf5
- 2.Sxf5#
- 1...Rh6
- 2.Qxe5#
- 1...Rh7
- 2.Qxe5#
- 1...Rh8
- 2.Qxe5#
- 1...Bxd4
- 2.Rxd4#
- 2.Rd5#
- 1...Bf6
- 2.Rd5#
- 1...Bg7
- 2.Rd5#
- 1...Bh8
- 2.Rd5#
- 1...Bh7
- 2.Sxf7#
- 1...Se2
- 2.Sb5#
- 2.Bxe5#
- 1...Sg2
- 2.Bxe5#
- 1...Sd3
- 2.Sb5#
- 1...Sh3
- 2.Bxe5#
- 1...Sd5
- 2.Bxe5#
- 1...Se6
- 2.Bxe5#
- 1...Sa6
- 2.Qd7#
- 1...Sc6
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...Qg2
- Tries
- 1.Bxf4?
- threat
- 2.Bxe5#
- 1...Qb5+
- 2.Sxb5#
- 1...Qxf4
- 2.Sb5#
- 1...Rxf5
- 2.Sxf5#
- 1...Bxf4
- 2.Rd5#
- 1...Sc6
- 2.Qd7#
- 1...Sd7
- 2.Qxd7#
- 1...f6!
- threat
- 1.Rd5+?
- 1...Sxd5
- 2.Bxe5#
- 1...Kxd5!
- 1...Sxd5
- 1.Rc6+?
- 1...Sxc6
- 2.Qd7#
- 1...Kd5!
- 1...Sxc6
- 1.Qxh5?
- threat
- 2.Sf5#
- 2.Qxe5#
- 1...Qb5+
- 2.Sxb5#
- 1...Bxd4
- 2.Rxd4#
- 2.Rd5#
- 2.Qd5#
- 1...Sxh5
- 2.Bxe5#
- 1...c6
- 2.Qxe5#
- 1...Qh3
- 2.Sb5#
- 2.Qxe5#
- 1...Bf6
- 2.Sf5#
- 2.Rd5#
- 2.Qd5#
- 1...Bg7
- 2.Sf5#
- 2.Rd5#
- 2.Qd5#
- 1...Bh8
- 2.Sf5#
- 2.Rd5#
- 2.Qd5#
- 1...Bh7
- 2.Sxf7#
- 2.Qxe5#
- 1...Se2
- 2.Sb5#
- 2.Bxe5#
- 2.Qxe5#
- 1...Sg2
- 2.Bxe5#
- 2.Qxe5#
- 1...Sd3
- 2.Sb5#
- 1...Sh3
- 2.Bxe5#
- 2.Qxe5#
- 1...Sd5
- 2.Bxe5#
- 2.Qxe5#
- 1...Se6
- 2.Bxe5#
- 2.Qxe5#
- 1...Sc6
- 2.Sf5#
- 1...Sd7
- 2.Sf5#
- 1...e6
- 2.Qxe5#
- 1...f5
- 2.Sxf5#
- 1...f6
- 2.Sf5#
- 1...Sg6!
- threat
- 1.Bxf4?
- Keys
- 1.Qxf7!
- threat
- 2.Qxe7#
- 1...Qb5+
- 2.Sxb5#
- 1...Bxf7+
- 2.Sxf7#
- 1...Rh7
- 2.Sf5#
- 1...Bf6
- 2.Re6#
- 1...Sd5
- 2.Rxd5#
- 1...Sg6
- 2.Rd5#
- 1...Sc6
- 2.Rxc6#
- 1...e6
- 2.Qxc7#
- 2.Qe7#
- 2.Qf8#
- threat
- 1.Qxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 26
- Sets
- Q(a);N_GUARD::S(C)
- Q(a);CHECK,N_GUARD::S(C),XQ(a)
- R(d);N_GUARD,XB(A)::QAB1(F),XB(c)
- R(d);N_GUARD::QAB1(F),XB(c)
- R(d);XQ(F)::S(C),XR(d)
- B(c);P_SPINS(b)::R1(E)
- B(j);N_GUARD::S(H),XP(h)
- S(b);OGATE,P_SPINB(c)::B(A),XB(c)
- S(b);P_SPINB(c),S_CUTQ(a)::S(C)
- S(i);N_GUARD::QAR1(F)
- S(i);N_GUARD::QAR1(F),XS(i)
- Tries
- Try
- B(A);P_PINB(c),XS(b)
- Threat
- B(A),XB(c)
- Vars
- Q(a);CHECK,N_GUARD::S(C),XQ(a)
- Q(a);N_GUARD,N_SPINB(c),XB(A)::S(C)
- R(d);XQ(F)::S(C),XR(d)
- B(c);N_SPINB(c),XB(A)::R1(E)
- S(i);N_GUARD::QAR1(F)
- S(i);N_GUARD::QAR1(F),XS(i)
- Refutation
- P(h);
- Try
- R(E);CHECK
- Vars
- S(b);OGATE,P_SPINB(c),SBLOCK,XR(E)::B(A),XB(c)
- Refutation
- K(e);P-FLIGHT,P_SPINB(c),XR(E)
- Try
- R(E);CHECK
- Vars
- S(i);XR(E)::QAR1(F)
- Refutation
- K(e);P-FLIGHT,P_SPINB(c)
- Try
- Q(F);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::S(C),XQ(a)
- S(b);OGATE,P_SPINB(c),XQ(F)::B(A),XB(c)
- P(f);::QAB1(F),XB(c)
- S(b);P_SPINB(c),S_CUTQ(a)::S(C)
- S(i);::S(C)
- P(g);::QAB1(F),XB(c)
- P(h);::S(C),XP(h)
- P(h);::S(C)
- Refutation
- S(b);P_SPINB(c)
- Try
- Actual
- Q(F);XP(h)
- Threat
- QAB1(F),XP(g)
- Vars
- Q(a);CHECK,N_GUARD::S(C),XQ(a)
- B(j);CHECK,XQ(F)::S(H),XB(j)
- R(d);N_GUARD::S(C)
- B(c);OGATE,P_SPINS(b)::R1(D)
- S(b);N_GUARD,P_SPINB(c)::R1(E),XS(b)
- S(b);N_GUARD,P_SPINB(c)::R1(E)
- S(i);N_GUARD::R1(E),XS(i)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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