MESON Chess Problem Database

Problem Display
PID: 79636 (B7/1R1n4/2Q1p2n/1p1rN1B1/4k3/3NP3/K7/5R2 w - - 0 1)

Touw Hian Bwee

1st HM., Themes-64, 1983/III

B7/1R1n4/2Q1p2n/1p1rN1B1/4k3/3NP3/K7/5R2

#2

9 + 6

6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Sc5#
    • 1...b4
      • 2.Rxb4#
  • Tries
    • 1.Sc5+?
      • 1...Kxe5
        • 2.Qxe6#
      • 1...Sxc5!
    • 1.Qxd5+?
      • 1...Kxd5
        • 2.Rb6#
        • 2.Rxd7#
      • 1...exd5!
    • 1.Qc4+?
      • 1...Rd4
        • 2.Rxb5#
        • 2.Rb6#
        • 2.Ra7#
        • 2.Rc7#
        • 2.Rxd7#
        • 2.Rb8#
        • 2.Qxd4#
      • 1...bxc4!
    • 1.Qxe6?
      • threat
        • 2.Sf2#
      • 1...Rxd3
        • 2.Sxd7#
      • 1...Rxe5
        • 2.Rxd7#
      • 1...Sg4
        • 2.Qxg4#
        • 2.Qf5#
        • 2.Qg6#
      • 1...Sxe5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qg2#
      • 1...Rxd3
        • 2.Rxb5#
      • 1...Rxe5
        • 2.Sb4#
      • 1...Sxe5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD,SBLOCK,XS(E)::S(C)
    • P(b);OGATE::R(H),XP(b)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);N_SPINR(c),P-FLIGHT,XS(E)::QAR1(G),XP(d)
      • Refutation
        • S(f);XS(C)
    • Try
      • Q(G);CHECK,XR(c)
      • Refutation
        • P(d);XQ(G)
    • Try
      • Q(G);CHECK,N_PINR(c)
      • Refutation
        • P(b);XQ(G)
    • Try
      • Q(G);N_PINR(c),XP(d)
      • Threat
        • S(C)
      • Vars
        • R(c);N_GUARD,SBLOCK,XS(C)::QAR(G)+S(E),XS(f)
        • R(c);OGATEB,P_SPINR(c),XS(E)::B(I)+R(H),XS(f)
      • Refutation
        • S(f);P_SPINS(f),XS(E)
  • Actual
    • Q(G);N_PINR(c)
    • Threat
      • QAB(G)
    • Vars
      • R(c);OGATEB,P_SPINR(c),XS(C)::B(I)+R(H),XP(b)
      • R(c);N_GUARD,SBLOCK,XS(E)::QAB(G)+S(C)
      • S(f);SBLOCK,XS(E)::QAB(G)+S(C),DCHECK
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