MESON Chess Problem Database

Problem Display
PID: 81593 (7k/2p5/3p1NK1/2rQ4/1p1R2B1/1b2p1p1/2p5/r7 w - - 0 1)

Sydenham, Colin Peter

British Chess Magazine, 1982

7k/2p5/3p1NK1/2rQ4/1p1R2B1/1b2p1p1/2p5/r7

#2

5 + 10

56 The Problemist 2008
15513 Selected Chess Problems of Colin Sydenham 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Qh5#
    • 1...Rc4
      • 2.Qg8#
      • 2.Qh5#
    • 1...Rc6
      • 2.Qh5#
    • 1...Ba4
      • 2.Qg8#
  • Tries
    • 1.Bh3?
      • threat
        • 2.Rh4#
      • 1...Rc4
        • 2.Qg8#
        • 2.Qh5#
      • 1...Rxd5!
    • 1.Be6?
      • threat
        • 2.Rh4#
      • 1...Rh1
        • 2.Qa8#
      • 1...Rc4
        • 2.Qh5#
      • 1...Rxd5!
    • 1.Qh1+?
      • 1...Rh5
        • 2.Qxh5#
      • 1...Rxh1!
    • 1.Qa8+?
      • 1...Bg8
        • 2.Qxg8#
      • 1...Rxa8!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Rh4#
      • 1...Rh1
        • 2.Qxh1#
      • 1...Rc4
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD::QAR(C)
    • B(c);N_GUARD::QAR1(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • R(A)
      • Refutation
        • R(g);XQ(C)
    • Try
      • B(B);
      • Threat
        • R(A)
      • Vars
        • R(a);N_GUARD::QAB1(C)
        • R(g);N_GUARD::QAR(C)
      • Refutation
        • R(g);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAR(C),XR(g)
      • Refutation
        • R(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(C),XB(c)
      • Refutation
        • R(a);XQ(C)
  • Actual
    • B(B);
    • Threat
      • R(A)
    • Vars
      • R(a);N_GUARD::QAB(C),XR(a)
      • R(g);S_CUTB(c)::QAR1(C)
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