MESON Chess Problem Database

Problem Display
PID: 61947 (3nK3/8/4p3/3Pr2P/RB1NkN1Q/2Pp2n1/3P1R2/7b w - - 0 1)

Touw Hian Bwee

British Chess Magazine, 1978

3nK3/8/4p3/3Pr2P/RB1NkN1Q/2Pp2n1/3P1R2/7b

#2

11 + 7

3750 FIDE Album (1977-1979) 1984
6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Sg6#
    • 1...Sf1
      • 2.Qxh1#
    • 1...Se2
      • 2.Qxh1#
    • 1...Sf5
      • 2.Qxh1#
    • 1...Sxh5
      • 2.Qxh1#
    • 1...exd5+
      • 2.Sfe6#
  • Tries
    • 1.Qxg3?
      • threat
        • 2.Qxd3#
        • 2.Qe3#
      • 1...Rxd5
        • 2.Qe3#
      • 1...Rxh5
        • 2.Qe3#
      • 1...Rf5
        • 2.Qe3#
      • 1...Rg5
        • 2.Qe3#
      • 1...Bf3
        • 2.Qxf3#
      • 1...exd5+!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sxg3#
        • 2.Sd6#
      • 1...exd5+
        • 2.Se6#
      • 1...exf5+
        • 2.Be7#
      • 1...Kxf5
        • 2.Sg2#
      • 1...Rxd5
        • 2.Sg6#
      • 1...Rxf5
        • 2.Bd6#
      • 1...Sxf5
        • 2.Qxh1#
      • 1...Sxh5
        • 2.Sd6#
      • 1...Sf1
        • 2.Sd6#
      • 1...Se2
        • 2.Sd6#
      • 1...Sb7
        • 2.Sxg3#
      • 1...Sf7
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK,XP(I)::QAR(H)+S(G)
    • S(c);N_GUARD::QAB(H),XB(a)
    • S(c);N_GUARD,XP(J)::QAB(H),XB(a)
    • P(f);CHECK,SBLOCK,XP(I)::QAR(H)+S(G)
  • Tries
    • Try
      • Q(H);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XP(I)::QAR1(H)
        • R(e);XP(J)::QAR1(H)
        • R(e);::QAR1(H)
        • B(a);N_GUARD::QAB1(H),XB(a)
      • Refutation
        • P(f);CHECK,XP(I)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • P(f);CHECK,SBLOCK,XP(I)::QAR(H)+S(G)
      • P(f);CHECK,SBLOCK,XS(F)::R(D)+B(E)
      • K(d);S_FLIGHT,XS(F)::R(B)+S(G)
      • R(e);SBLOCK,XP(I)::QAR(H)+S(G)
      • R(e);SBLOCK,XS(F)::R(D)+B(E)
      • S(c);N_GUARD,SBLOCK,XS(F)::QAB(H),XB(a)
      • S(c);XP(J)::S(F)
      • S(c);::S(F)
      • S(g);::S(F),XS(c)
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