MESON Chess Problem Database

Problem Display
PID: 18255 (rbR1R3/p1np4/B2P4/K1pkP3/3N2p1/4Q3/8/8 w - - 0 1)

Goldschmeding, Cornelis

The Problemist, 1954

rbR1R3/p1np4/B2P4/K1pkP3/3N2p1/4Q3/8/8

#2

8 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • 1...Kc6
        • 2.Se7#
        • 2.Qe4#
      • 1...Sxa6
        • 2.Qd3#
      • 1...Se6
        • 2.Se7#
      • 1...Sb5
        • 2.Rxc5#
      • 1...g3
        • 2.Qf3#
      • 1...c4
        • 2.Bb7#
      • 1...Sxe8!
    • 1.Qf3+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...gxf3!
  • Keys
    • 1.Se2!
      • 1...Kc6
        • 2.Qe4#
      • 1...Sxa6
        • 2.Qd3#
      • 1...Sxe8
        • 2.Sf4#
      • 1...Sb5
        • 2.Rxc5#
      • 1...Se6
        • 2.Sc3#
      • 1...g3
        • 2.Qf3#
      • 1...c4
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • S(e);XB(E)::QAR2(A)
        • S(e);SBLOCK::S(B)
        • S(e);OGATE::R1(G),XP(b)
        • P(a);N_GUARD::QAB(A)
        • P(b);SBLOCK::B(E)
      • Refutation
        • S(e);XR(H)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATEB,P-FLIGHT,XS(B)::QAR1(A)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • S(B);
    • Vars
      • K(c);P_SPINS(e),S_FLIGHT::QAB(A)
      • S(e);XB(E)::QAR2(A)
      • S(e);XR(H)::S(B)
      • S(e);OGATE::R1(G),XP(b)
      • S(e);::S(B)
      • P(a);N_GUARD::QAB(A)
      • P(b);SBLOCK::B(E)
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