MESON Chess Problem Database

Problem Display
PID: 146714 (1Kb3Q1/1p6/1R2R3/2rkN3/3r1p2/n2p4/2B5/1N6 w - - 0 1)

Willmott, Arthur

Australian Chess Problem Magazine TT, 1997

1Kb3Q1/1p6/1R2R3/2rkN3/3r1p2/n2p4/2B5/1N6

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rbd6#
    • 1...Sc4
      • 2.Sc3#
    • 1...d2
      • 2.Rbd6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Re5#
      • 1...Kc4
        • 2.Bb3#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Rc6!
    • 1.Qg2+?
      • 1...Re4
        • 2.Rbd6#
      • 1...f3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Re5#
      • 1...Kxc4
        • 2.Bb3#
      • 1...Rdxc4
        • 2.Rbd6#
      • 1...Rcxc4
        • 2.Qg5#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sxc4
        • 2.Sc3#
      • 1...Re4
        • 2.Red6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::R1(D)
    • S(a);S_CUTR(e)::S(A)
    • P(b);::R1(D)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB(G)+R(E),DCHECK
      • Vars
        • K(f);S_FLIGHT::B(B)
        • B(h);OGATE,P_SPINB(h),XR(E)::QAB1(G),XB(h)
      • Refutation
        • R(e);
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);P_SPINR(c)::R1(D)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • S(C);
    • Threat
      • QAB(G)+R(E),DCHECK
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(C)::B(B)
      • R(c);SBLOCK,XS(C)::R1(D)
      • R(e);SBLOCK,XS(C)::QAR(G)
      • B(h);OGATE,P_SPINB(h),XR(E)::QAB1(G),XB(h)
      • S(a);SBLOCK,XS(C)::S(A)
      • R(c);SBLOCK::QAB(G)+R(E),DCHECK
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