MESON Chess Problem Database

Problem Display
PID: 78777 (2Q2R2/bp1N1b2/q2p1B1K/3r1PP1/4k1NR/5pP1/2P2p2/1B6 w - - 0 1)

Touw Hian Bwee

3rd HM., BCF 122. Ty., 1969-1970

2Q2R2/bp1N1b2/q2p1B1K/3r1PP1/4k1NR/5pP1/2P2p2/1B6

#2

12 + 9

6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.c4#
    • 1...Rc5
      • 2.c4#
    • 1...Rxf5
      • 2.c4#
    • 1...Bd4
      • 2.c4#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Sdf6#
      • 1...Kxf5
        • 2.Sc5#
      • 1...Rxf5
        • 2.c4#
      • 1...Bd4
        • 2.c4#
      • 1...Be6!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Se3#
      • 1...Kxd4
        • 2.c3#
      • 1...Kxf5
        • 2.Sc5#
      • 1...Rxd4
        • 2.Sdf6#
      • 1...Rxf5
        • 2.Sgf6#
      • 1...Bxd4
        • 2.c4#
      • 1...Bh5
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD::B(A)+P(B)
    • R(d);N_GUARD,SBLOCK,XP(F)::B(A)+P(B)
    • B(g);S_CUTR(d)::B(A)+P(B)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(J)
      • Vars
        • K(c);P_SPINB(i),S_FLIGHT,XP(F)::QAB(K)+S(J)
        • R(d);N_GUARD,SBLOCK,XP(F)::B(A)+P(B)
        • B(g);S_CUTR(d)::B(A)+P(B)
      • Refutation
        • B(i);
  • Actual
    • B(H);
    • Threat
      • R(E)+S(D)
    • Vars
      • K(c);P-FLIGHT,XB(H)::P(B)
      • K(c);P_SPINB(i),S_FLIGHT,XP(F)::QAB(K)+S(J)
      • R(d);SBLOCK,XB(H)::S(J)
      • R(d);SBLOCK,XP(F)::R(E)+S(D),DCHECK
      • B(g);SBLOCK,XB(H)::B(A)+P(B)
      • B(i);::R(E)+S(D),DCHECK,XP(a)
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