MESON Chess Problem Database

Problem Display
PID: 10867 (2K5/p1NQ4/2p5/k1n5/p1p5/RpN5/8/1r2B3 w - - 0 1)

Touw Hian Bwee

1st Prize, Pedagogusok Lapja, 1969

2K5/p1NQ4/2p5/k1n5/p1p5/RpN5/8/1r2B3

#2

6 + 8

3751 FIDE Album (1968-1970) 1977
6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Sxa4+?
      • 1...c3
        • 2.Bxc3#
      • 1...Rxe1!
    • 1.S3d5+?
      • 1...c3
        • 2.Bxc3#
      • 1...Rxe1!
    • 1.Rxa4+?
      • 1...Kb6
        • 2.Sa8#
      • 1...Sxa4!
    • 1.Qxc6?
      • threat
        • 2.Qb5#
        • 2.Qxc5#
      • 1...Sd3
        • 2.Rxa4#
        • 2.Qb5#
      • 1...Se4
        • 2.Rxa4#
        • 2.Qb5#
      • 1...Sa6
        • 2.Rxa4#
        • 2.Qb5#
      • 1...Se6
        • 2.Rxa4#
        • 2.Qb5#
      • 1...Sb7
        • 2.Rxa4#
        • 2.Qb5#
      • 1...Sd7
        • 2.Rxa4#
        • 2.Qb5#
      • 1...a6
        • 2.Qxc5#
      • 1...Kb4!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxc5#
      • 1...Kb4
        • 2.Sxb1#
      • 1...Kb6
        • 2.Sxa4#
      • 1...Sd3
        • 2.Rxa4#
      • 1...Se4
        • 2.Rxa4#
      • 1...Sa6
        • 2.Rxa4#
      • 1...Se6
        • 2.Rxa4#
      • 1...Sb7
        • 2.Rxa4#
      • 1...Sd7
        • 2.Rxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK,XP(c)
      • Vars
        • P(d);P_SPINP(d)::B(A),XP(d)
      • Refutation
        • R(a);XB(A)
    • Try
      • S(C);CHECK
      • Vars
        • P(d);N_SPINP(c),P_SPINP(d)::B(A),XP(d)
      • Refutation
        • R(a);XB(A)
    • Try
      • R(B);CHECK,XP(c)
      • Vars
        • K(e);S_FLIGHT::S(D)
      • Refutation
        • S(f);XR(B)
    • Try
      • Q(E);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::QAR2(E),XS(f)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR2(E),XS(f)
    • Vars
      • K(e);N_SPINP(c),P_SPINP(d),S_FLIGHT::B(A)+S(C),XR(a)
      • K(e);N_SPINP(c),P_SPINS(f),S_FLIGHT::S(C),XP(c)
      • S(f);N_GUARD::R1(B),XP(c)
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