MESON Chess Problem Database

Problem Display
PID: 54263 (1Q6/8/B1PBpp2/p3r3/K2pkP2/2P1N2R/8/2n2R1N w - - 0 1)

Sim, Malcolm

Chess Life, 1956

1Q6/8/B1PBpp2/p3r3/K2pkP2/2P1N2R/8/2n2R1N

#2

11 + 7

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sf2#
    • 1...Rc5
      • 2.Sf2#
    • 1...Rd5
      • 2.Sf2#
    • 1...Rf5
      • 2.Sf2#
    • 1...Rg5
      • 2.Sf2#
    • 1...Rh5
      • 2.Sf2#
  • Tries
    • 1.Qb1+?
      • 1...Sd3
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...d3!
  • Keys
    • 1.Qb5!
      • 1...Rxb5
        • 2.Sf2#
      • 1...dxc3
        • 2.Qc4#
      • 1...dxe3
        • 2.Sg3#
      • 1...Sa2
        • 2.Qd3#
      • 1...Rc5
        • 2.Sf2#
      • 1...Rd5
        • 2.Sf2#
      • 1...Rf5
        • 2.Sf2#
      • 1...Rg5
        • 2.Sf2#
      • 1...Rh5
        • 2.Sf2#
      • 1...Se2
        • 2.Qd3#
      • 1...Sb3
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...d3
        • 2.Qc4#
      • 1...f5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(e);::S(B)
  • Tries
    • Try
      • Q(K);CHECK
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • Q(K);
    • Vars
      • R(e);XQ(K)::S(B)
      • P(b);OGATEB,XP(C)::QAR2(K)
      • P(b);SBLOCK,XS(D)::S(B)
      • S(a);N_GUARD::QAB1(K)
      • R(e);::S(B)
      • S(a);N_GUARD::QAB1(K),XS(a)
      • P(b);OGATEB::QAR2(K)
      • P(g);N_GUARD::QAR1(K),XR(e)
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