MESON Chess Problem Database

Problem Display
PID: 78669 (b1Q5/q7/2NPp3/2pk2NR/3p1p2/B1p2K2/4P3/3R1B2 w - - 0 1)

Touw Hian Bwee

5th HM., The Problemist, 1962

b1Q5/q7/2NPp3/2pk2NR/3p1p2/B1p2K2/4P3/3R1B2

#2

10 + 8

6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Se4#
      • 2.Rxd4#
    • 1...Bxc6
      • 2.Qxe6#
    • 1...c4
      • 2.Sxe6#
  • Tries
    • 1.Sxe6+?
      • 1...Kxd6
        • 2.Rxd4#
      • 1...Kc4!
    • 1.e4+?
      • 1...Kxd6
        • 2.Rxd4#
      • 1...fxe4 ep!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Qxe6#
      • 1...Kc4+
        • 2.e4#
      • 1...Ke5+
        • 2.Se4#
      • 1...Kxd6+
        • 2.Sc6#
      • 1...cxd4
        • 2.Sxe6#
      • 1...e5
        • 2.Qe6#
      • 1...Qd7
        • 2.Qxc5#
      • 1...Qe7
        • 2.Qxc5#
      • 1...Qf7
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • B(h);SBLOCK,XS(H)::QAB1(J),XP(f)
    • P(d);SBLOCK::R(G)+S(F),XP(f)
  • Tries
    • Try
      • S(F);CHECK,XP(f)
      • Vars
        • K(e);P-FLIGHT,P_PINS(H),XP(I)::R(A),XP(b)
      • Refutation
        • K(e);N_SPINP(b),P_PINS(H),S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(I)::R(A),XP(b)
      • Refutation
        • P(c);EP,XP(C)
  • Actual
    • S(H);XP(b)
    • Threat
      • QAB1(J),XP(f)
    • Vars
      • K(e);CHECK,P_SPINP(d),S_FLIGHT::B(B)+P(C)
      • K(e);CHECK,P-FLIGHT::R(G)+S(F)
      • K(e);CHECK,P-FLIGHT,P_SPINP(d),XP(I)::R(A)+S(H)
      • P(d);P_SPINP(d),XS(H)::R(G)+S(F),XP(f)
      • P(f);::QAB1(J)
      • Q(g);N_GUARD::QAR1(J),XP(d)
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