MESON Chess Problem Database

Problem Display
PID: 18130 (2N3k1/1R5p/2p1K2P/6p1/2B2b2/4pQ2/1r6/B4R2 w - - 0 1)

Ingre, Bengt

Tidskrift for Schack, 1953

2N3k1/1R5p/2p1K2P/6p1/2B2b2/4pQ2/1r6/B4R2

#2

8 + 7

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Ke7#
    • 1...Ra2
      • 2.Ke7#
    • 1...Re2
      • 2.Ke7#
    • 1...Rf2
      • 2.Ke7#
    • 1...Rg2
      • 2.Ke7#
    • 1...Rh2
      • 2.Ke7#
    • 1...Rb3
      • 2.Ke7#
    • 1...Rb6
      • 2.Ke7#
    • 1...Bh2
      • 2.Qf8#
    • 1...Bg3
      • 2.Qf8#
    • 1...Be5
      • 2.Qf8#
    • 1...Bc7
      • 2.Qf8#
    • 1...Bb8
      • 2.Qf8#
  • Tries
    • 1.Bxb2?
      • threat
        • 2.Ke7#
      • 1...Be5
        • 2.Qf8#
      • 1...Bd6
        • 2.Kxd6#
        • 2.Kd7#
        • 2.Qf7#
      • 1...Kf8!
    • 1.Re7?
      • threat
        • 2.Re8#
      • 1...Kh8
        • 2.Re8#
      • 1...Bd6
        • 2.Qf8#
      • 1...Kf8!
    • 1.Qh5?
      • threat
        • 2.Qe8#
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qe8#
      • 1...Bd6!
    • 1.Qxf4?
      • threat
        • 2.Qf8#
      • 1...Kh8
        • 2.Qf8#
      • 1...Rf2
        • 2.Kd6#
        • 2.Kd7#
        • 2.Ke7#
        • 2.Se7#
      • 1...gxf4!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Se7#
      • 1...Kf8
        • 2.Sb6#
      • 1...Kh8
        • 2.Sd6#
      • 1...Rxb8
        • 2.Ke7#
      • 1...Bxb8
        • 2.Qf8#

This anticipates 208210(1993), 271937(1995)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • R(a);::B(D)+K(E)
    • B(c);OGATE::QAR1(C)
  • Tries
    • Try
      • B(A);XR(a)
      • Threat
        • B(D)+K(E)
      • Vars
        • B(c);OGATE::QAR1(C)
      • Refutation
        • K(g);P-FLIGHT,P_SPINB(c)
    • Try
      • R(G);
      • Threat
        • R(G)
      • Vars
        • K(g);P-FLIGHT,P_SPINR(a)::R(G)
        • B(c);OGATE::QAR1(C)
      • Refutation
        • K(g);P-FLIGHT,P_SPINB(c)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • K(g);P-FLIGHT,P_SPINB(c)::QAR1(C)
        • K(g);P-FLIGHT,P_SPINR(a)::QAR(C)
      • Refutation
        • B(c);
    • Try
      • Q(C);XB(c)
      • Threat
        • QAR1(C)
      • Vars
        • K(g);P-FLIGHT,P_SPINR(a)::QAR2(C)
      • Refutation
        • P(d);XQ(C)
  • Actual
    • R(G);
    • Threat
      • R(G)+S(H),DCHECK
    • Vars
      • K(g);P-FLIGHT,P_SPINB(c)::R(G)+S(H)
      • K(g);P-FLIGHT,P_SPINR(a)::R(G)+S(H)
      • R(a);XR(G)::B(D)+K(E)
      • B(c);OGATE,XR(G)::QAR1(C)
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