MESON Chess Problem Database

Problem Display
PID: 163497 (8/8/p2N4/2B1R2p/5P2/b1k2KQp/R2p1p2/nBNrqr2 w - - 0 1)

Banaszek, Marcin

idee & form, 1994

8/8/p2N4/2B1R2p/5P2/b1k2KQp/R2p1p2/nBNrqr2

#2

9 + 11

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2+
      • 2.Kxe2#
    • 1...Qe3+
      • 2.Rxe3#
    • 1...Qe4+
      • 2.Kxe4#
    • 1...Sc2
      • 2.Rxc2#
    • 1...Sb3
      • 2.Rc2#
  • Tries
    • 1.Se2+?
      • 1...Qxe2+
        • 2.Kxe2#
      • 1...Kb3!
    • 1.Se4+?
      • 1...Kc4
        • 2.Bd3#
      • 1...Qxe4+!
    • 1.Sb5+?
      • 1...Kc4
        • 2.Bd3#
      • 1...axb5!
    • 1.Rxa3+?
      • 1...Sb3
        • 2.Rxb3#
      • 1...Kb2!
    • 1.Qg7?
      • threat
        • 2.Rxe1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re4#
      • 1...Qe2+
        • 2.Rxe2#
      • 1...Qe3+
        • 2.Rxe3#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Rxc1
        • 2.Re3#
      • 1...Bxc1
        • 2.Re3#
      • 1...dxc1Q
        • 2.Re3#
      • 1...dxc1S
        • 2.Re3#
      • 1...dxc1B
        • 2.Re3#
      • 1...dxc1R
        • 2.Re3#
      • 1...Rg1
        • 2.Re3#
      • 1...Sc2
        • 2.Rxc2#
        • 2.Re3#
      • 1...Sb3
        • 2.Rc2#
        • 2.Re3#
      • 1...Bxc5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qc4#
      • 1...Qe2+
        • 2.Sxe2#
      • 1...Qe3+
        • 2.Rxe3#
      • 1...Qe4+
        • 2.Sxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(c);CHECK::QAR(E)+K(D),XQ(c)
    • Q(c);CHECK,N_GUARD::R(H),XQ(c)
    • S(a);N_GUARD::R1(C),XS(a)
    • S(a);N_GUARD::R1(C)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • Q(c);CHECK,XS(B)::QAR(E)+K(D),XQ(c)
      • Refutation
        • K(h);P-FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(h);P-FLIGHT::B(A)
      • Refutation
        • Q(c);CHECK,XS(I)
    • Try
      • S(I);CHECK
      • Vars
        • K(h);P-FLIGHT::B(A)
      • Refutation
        • P(k);XS(I)
    • Try
      • R(C);CHECK,XB(g)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(C),XS(a)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(4)
      • Vars
        • Q(c);CHECK::QAB(E)+R(H),XQ(c)
        • Q(c);CHECK::QAB(E)+R(H),DCHECK,XQ(c)
        • Q(c);OGATE,P_SPINQ(c),XR(H)::QAB(E),XQ(c)
        • R(b);XS(B)::QAB(E)+R(H),DCHECK
        • B(g);XS(B)::QAB(E)+R(H),DCHECK
        • P(e);XS(B)::QAB(E)+R(H),DCHECK
        • R(d);::QAB(E)+R(H),DCHECK
      • Refutation
        • B(g);XB(G)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • Q(c);CHECK,N_GUARD::S(B),XQ(c)
      • Q(c);CHECK,N_GUARD::R(H),XQ(c)
      • Q(c);CHECK,N_GUARD::S(I),XQ(c)
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