MESON Chess Problem Database
Problem Display
PID: 240555 (3NN3/q4n1B/8/1R1rr1k1/4P1p1/4R3/7Q/2Bb2K1 w - - 0 1)
Haring, Jacobus
Die Schwalbe, 1971
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qxe3+
- 2.Bxe3#
- 1...Qd4
- 2.Sxf7#
- 1...Qc5
- 2.Sxf7#
- 1...Qb6
- 2.Sxf7#
- 1...Qb8
- 2.Sxf7#
- 2.Rd3#
- 1...Qa1
- 2.Sxf7#
- 1...Qa2
- 2.Sxf7#
- 1...Qa3
- 2.Sxf7#
- 1...Qa4
- 2.Sxf7#
- 2.Rd3#
- 1...Qa5
- 2.Sxf7#
- 1...Qa6
- 2.Sxf7#
- 2.Rd3#
- 1...Qb7
- 2.Rd3#
- 1...Qd7
- 2.Rd3#
- 1...Qe7
- 2.Rd3#
- 1...Qa8
- 2.Sxf7#
- 2.Rd3#
- 1...Rd2
- 2.Se6#
- 1...Rd3
- 2.Se6#
- 1...Rd4
- 2.Se6#
- 2.Rd3#
- 1...Rc5
- 2.Rc3#
- 1...Rd7
- 2.Se6#
- 1...Rf5
- 2.Se6#
- 1...Re6
- 2.Sxe6#
- 1...Qxe3+
- Tries
- 1.Rxd5?
- threat
- 2.Se6#
- 1...Qxe3+
- 2.Bxe3#
- 1...Sxd8
- 2.Rxe5#
- 1...Qb6
- 2.Sxf7#
- 1...Qa6
- 2.Sxf7#
- 2.Re1#
- 2.Re2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Red3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 1...Qd7
- 2.Re1#
- 2.Re2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Red3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 1...Qe7
- 2.Re1#
- 2.Re2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Red3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 1...g3!
- threat
- 1.Rb6?
- threat
- 2.Rd3#
- 2.Rg6#
- 1...Qxb6
- 2.Sxf7#
- 1...g3
- 2.Rxg3#
- 1...Qa1
- 2.Sxf7#
- 2.Rg6#
- 1...Qa2
- 2.Sxf7#
- 2.Rg6#
- 1...Qa3
- 2.Sxf7#
- 2.Rg6#
- 1...Qa5
- 2.Sxf7#
- 2.Rg6#
- 1...Qa6
- 2.Sxf7#
- 2.Rd3#
- 1...Qc7
- 2.Rg6#
- 1...Rd2
- 2.Rg6#
- 1...Rd3
- 2.Rxd3#
- 2.Rg6#
- 1...Rc5
- 2.Rc3#
- 2.Rg6#
- 1...Rd6
- 2.Rd3#
- 1...Rf5
- 2.Se6#
- 2.Rg6#
- 1...Re6
- 2.Sxe6#
- 2.Rd3#
- 1...Sd6
- 2.Rd3#
- 1...Sh8
- 2.Rd3#
- 2.Qh6#
- 1...Rxe4!
- threat
- 1.Rxd5?
- Keys
- 1.Rc5!
- threat
- 2.Rd3#
- 1...Qxc5
- 2.Sxf7#
- 1...Rxc5
- 2.Rc3#
- 1...Rxe4
- 2.Rxe4#
- 1...Rxe8
- 2.Rf3#
- 1...g3
- 2.Rxg3#
- 1...Qa1
- 2.Sxf7#
- 1...Qa2
- 2.Sxf7#
- 1...Qa3
- 2.Sxf7#
- 1...Qa5
- 2.Sxf7#
- 1...Rd2
- 2.Se6#
- 1...Rd3
- 2.Se6#
- 2.Rxd3#
- 1...Rf5
- 2.Se6#
- threat
- 1.Rc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(D)::B(A),XQ(f)
- Q(f);N_GUARD::S(H),XS(g)
- Q(f);N_GUARD,N_PINR(D)::S(H),XS(g)
- Q(f);N_PINR(D)::B(A)+R(D)
- R(c);P_SPINR(d)::S(H)
- R(c);N_PINR(D)::B(A)+R(D)
- R(d);N_GUARD::S(H)
- R(d);N_GUARD,P_SPINR(c)::S(H),XR(d)
- Tries
- Try
- R(F);P_PINR(d),XR(c)
- Threat
- S(H)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XR(D)::B(A),XQ(f)
- S(g);N_GUARD,XS(H)::R(F),XR(d)
- Q(f);N_GUARD::S(H),XS(g)
- Refutation
- P(b);
- Try
- R(F);N_SPINR(D)
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,P_PINR(D),XR(F)::S(H),XS(g)
- P(b);::B(A)+R(D),DCHECK,XP(b)
- Q(f);::R1(F)
- R(c);::R1(F)
- R(c);::B(A)+R(D)
- S(g);::B(A)+R(D)
- Refutation
- R(d);XP(E)
- Try
- Actual
- R(F);N_SPINR(D)
- Threat
- B(A)+R(D)
- Vars
- Q(f);N_GUARD,P_PINR(D),XR(F)::S(H),XS(g)
- R(c);N_GUARD,XR(F)::B(A)+R(D)
- R(d);OGATE,P_SPINR(c),XP(E)::B(A)+R(D),XR(d)
- R(d);P_SPINR(c),XS(I)::B(A)+R(D)
- P(b);::B(A)+R(D),DCHECK,XP(b)
- Q(f);N_GUARD::S(H),XS(g)
- R(c);P_SPINR(d)::S(H)
- R(d);N_GUARD::S(H)
Developed and maintained by Brian Stephenson.
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