MESON Chess Problem Database
Problem Display
PID: 8159 (8/6pN/4K1P1/4p1p1/RB2rk1p/4Np1R/3Q3P/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
The Problemist, 1995
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxe3
- 2.Bd6#
- 1...f2
- 2.Qxf2#
- 1...g4
- 2.Sg2#
- 2.Sd5#
- 1...Rxe3
- Tries
- 1.Sd1+?
- 1...Re3
- 2.Bd6#
- 1...Kg4!
- 1...Re3
- 1.Sf1+?
- 1...Re3
- 2.Bd6#
- 1...Kg4!
- 1...Re3
- 1.Sc2+?
- 1...Re3
- 2.Bd6#
- 1...Kg4!
- 1...Re3
- 1.Sg4+?
- 1...Re3
- 2.Bd6#
- 1...Kxg4!
- 1...Re3
- 1.Sf5+?
- 1...Re3
- 2.Bd6#
- 1...Kg4!
- 1...Re3
- 1.Sf6?
- threat
- 2.Sg2#
- 2.Sed5#
- 2.Sfd5#
- 2.Sh5#
- 1...Rxe3
- 2.Bd6#
- 1...Rxb4
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sc4#
- 2.Seg4#
- 2.Sed5#
- 2.Sf5#
- 1...g4
- 2.Sg2#
- 2.Sed5#
- 1...Rc4
- 2.Sd1#
- 2.Sf1#
- 2.Sc2#
- 2.Sg2#
- 2.Sxc4#
- 2.Seg4#
- 2.Sed5#
- 2.Sf5#
- 1...Rd4
- 2.Sg2#
- 2.Sed5#
- 1...gxf6!
- threat
- 1.Bd6?
- threat
- 2.Bxe5#
- 1...Rb4
- 2.Rxb4#
- 1...Rc4
- 2.Rxc4#
- 1...Rd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Rxa4!
- threat
- 1.Rg3?
- threat
- 2.Sg2#
- 2.Sd5#
- 2.Rg4#
- 1...Rxe3
- 2.Bd6#
- 1...Rxb4
- 2.Rg4#
- 1...Rc4
- 2.Rg4#
- 1...Rd4
- 2.Rg4#
- 1...f2
- 2.Sg2#
- 2.Sd5#
- 2.Qxf2#
- 1...g4
- 2.Sg2#
- 2.Sd5#
- 2.Rxg4#
- 1...hxg3!
- threat
- 1.Rxh4+?
- 1...g4
- 2.Sg2#
- 2.Sd5#
- 2.Rxg4#
- 1...gxh4!
- 1...g4
- 1.Qd1?
- threat
- 2.Rxf3#
- 2.Qxf3#
- 1...Kxe3
- 2.Rxf3#
- 2.Qd2#
- 1...Rxb4
- 2.Qxf3#
- 1...Rc4
- 2.Qxf3#
- 1...Rd4
- 2.Qxf3#
- 1...f2
- 2.Sg2#
- 2.Sd5#
- 2.Rf3#
- 2.Qf3#
- 2.Qg4#
- 1...g4
- 2.Sd5#
- 1...Rxe3!
- threat
- 1.Qf2?
- threat
- 2.Rxf3#
- 2.Qxf3#
- 1...Rxb4
- 2.Qxf3#
- 1...Rc4
- 2.Qxf3#
- 1...Rd4
- 2.Qxf3#
- 1...g4
- 2.Sg2#
- 2.Sd5#
- 1...Rxe3!
- threat
- 1.Sd1+?
- Keys
- 1.Qd6!
- 1...Kxe3
- 2.Qd2#
- 1...Rxe3
- 2.Bd2#
- 1...Rxb4
- 2.Qxe5#
- 1...Rc4
- 2.Qxe5#
- 1...Rd4
- 2.Qxe5#
- 1...f2
- 2.Qf8#
- 1...g4
- 2.Sd5#
- 1...Kxe3
- 1.Qd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(b);OGATEB,P_SPINR(b),XS(C)::R(E)+B(F)
- P(a);OGATEB::QAR2(A),XP(a)
- Tries
- Try
- S(C);CHECK
- Vars
- R(b);P_SPINR(b)::R(E)+B(F)
- Refutation
- K(c);P-FLIGHT
- Try
- S(C);CHECK
- Vars
- R(b);P_SPINR(b)::R(E)+B(F)
- Refutation
- K(c);P-FLIGHT
- Try
- S(C);CHECK
- Vars
- R(b);P_SPINR(b)::R(E)+B(F)
- Refutation
- K(c);P-FLIGHT
- Try
- S(C);CHECK
- Vars
- R(b);P_SPINR(b)::R(E)+B(F)
- Refutation
- K(c);P-FLIGHT,XS(C)
- Try
- S(C);CHECK
- Vars
- R(b);P_SPINR(b)::R(E)+B(F)
- Refutation
- K(c);P-FLIGHT
- Try
- S(I);
- Threat
- DUALS(4)
- Vars
- R(b);OGATEB,P_SPINR(b),XS(C)::R(E)+B(F)
- Refutation
- P(g);XS(I)
- Try
- B(F);P_PINP(e),P_PINR(b)
- Threat
- B(F),XP(e)
- Vars
- R(b);OGATEB::R(E),XR(b)
- Refutation
- R(b);N_SPINR(b),XR(E)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- R(b);OGATEB,P_SPINR(b),XS(C)::R(E)+B(F)
- R(b);P_SPINR(b),XB(F)::R1(D)
- R(b);::R1(D)
- Refutation
- P(d);XR(D)
- Try
- R(D);CHECK,XP(d)
- Refutation
- P(f);XR(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(b);P_SPINR(b),XB(F)::QAR1(A),XP(a)
- R(b);::QAR1(A),XP(a)
- P(f);SBLOCK::S(C)
- Refutation
- R(b);XS(C)
- Try
- Q(A);P_PINP(a)
- Threat
- DUALS(2)
- Vars
- R(b);P_SPINR(b),XB(F)::QAR1(A),XP(a)
- R(b);::QAR1(A),XP(a)
- Refutation
- R(b);XS(C)
- Try
- Actual
- Q(A);P_PINP(e)
- Vars
- K(c);N_SPINP(e),OGATEB,P_SPINP(a),S_FLIGHT,XS(C)::QAB1(A)
- R(b);OGATEB,XS(C)::R(E)+B(F)
- R(b);N_GUARD,P_SPINR(b),XB(F)::QAB1(A),XP(e)
- R(b);N_GUARD::QAB1(A),XP(e)
- P(a);::QAR(A)
- P(f);SBLOCK::S(C)
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