MESON Chess Problem Database

Problem Display
PID: 10592 (B3R3/1r2N3/b2K1pp1/1Rp1B3/2pNk1rP/3pbpp1/8/4Q3 w - - 0 1)

Touw Hian Bwee

1st Prize, Die Schwalbe, 1966/I

B3R3/1r2N3/b2K1pp1/1Rp1B3/2pNk1rP/3pbpp1/8/4Q3

#2

9 + 12

23 Die Schwalbe 1969
3772 FIDE Album (1965-1967) 1976
6352 A Collection of Chess Problems by Touw Hian Bwee 2008
56 The Problemist 2014

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Qb1#
  • Tries
    • 1.Sef5?
      • threat
        • 2.Bxg3#
        • 2.Qxe3#
      • 1...Bxb5
        • 2.Qxe3#
      • 1...cxd4
        • 2.Bxg3#
      • 1...fxe5
        • 2.Qxe3#
      • 1...d2
        • 2.Qb1#
        • 2.Qxe3#
      • 1...Rf4
        • 2.Sxg3#
        • 2.Bxf6#
        • 2.Qxe3#
      • 1...g2
        • 2.Bh2#
        • 2.Bg3#
        • 2.Qxe3#
      • 1...gxf5!
    • 1.Sg8?
      • threat
        • 2.Sxf6#
      • 1...cxd4
        • 2.Bxg3#
      • 1...d2
        • 2.Qb1#
      • 1...Rf4
        • 2.Bxf6#
      • 1...f5
        • 2.Sf6#
      • 1...fxe5!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Qxe3#
      • 1...Kxd4
        • 2.Sc6#
      • 1...Kxf4
        • 2.Sd5#
      • 1...Rxf4
        • 2.Sef5#
      • 1...cxd4
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::QAB(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XR(D)::QAR1(A),XB(b)
        • P(h);XS(B)::R(I)+B(E),XP(d)
        • P(j);P_SPINP(j),XB(E)::QAR1(A),XB(b)
      • Refutation
        • P(k);XS(G)
    • Try
      • S(G);
      • Threat
        • S(G),XP(j)
      • Vars
        • P(h);SBLOCK,XS(B)::R(I)+B(E),XP(d)
        • P(a);OGATEB::QAB(A)
        • R(g);SBLOCK::R(I)+B(E),XP(j)
        • P(j);::S(G)
      • Refutation
        • P(j);P_SPINP(j),XB(E)
  • Actual
    • B(E);
    • Threat
      • QAR1(A),XB(b)
    • Vars
      • K(f);N_SPINB(b),N_SPINR(l),P-FLIGHT,XS(B)::S(G)
      • K(f);N_SPINB(b),N_SPINR(l),P-FLIGHT,XB(E)::S(G)
      • R(g);SBLOCK,XB(E)::R(I)+S(G)
      • P(h);SBLOCK,XS(B)::R(I)+S(G),XP(k)
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