MESON Chess Problem Database

Problem Display
PID: 28923 (2r4b/8/b4q2/3R1p2/B1p5/1r2QK2/N2P4/3kN3 w - - 0 1)

Shire, David J

Sachsische Zeitung, 1982

2r4b/8/b4q2/3R1p2/B1p5/1r2QK2/N2P4/3kN3

#2

7 + 8

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb3+?
      • 1...Kxe1
        • 2.Qd1#
        • 2.Qb1#
      • 1...cxb3!
    • 1.d3?
      • threat
        • 2.Qc1#
        • 2.Qe2#
      • 1...cxd3
        • 2.Qe2#
      • 1...Qa1
        • 2.Qe2#
      • 1...Qc3
        • 2.Qe2#
      • 1...Qe5
        • 2.Qc1#
      • 1...Qg5
        • 2.Qe2#
      • 1...Qe7
        • 2.Qc1#
      • 1...Qe6
        • 2.Qc1#
      • 1...Qh6
        • 2.Qe2#
      • 1...Re8
        • 2.Qc1#
      • 1...Qb2!
  • Keys
    • 1.d4!
      • threat
        • 2.Sc3#
      • 1...cxd4 ep
        • 2.Qe2#
      • 1...c3
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK,N_SPINQ(D),XR(b)
      • Refutation
        • P(c);P_SPINP(c),XQ(D)
    • Try
      • P(C);N_SPINQ(D)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);P_SPINP(c),XP(C)::QAB1(D)
        • Q(f);::QAB1(D)
        • Q(f);::QAR1(D)
        • R(g);::QAR1(D)
      • Refutation
        • Q(f);
  • Actual
    • P(C);
    • Threat
      • S(B)
    • Vars
      • P(c);EP,N_PINQ(D),P_SPINP(c),XP(C)::QAB1(D)
      • P(c);N_PINQ(D)::QAR1(D)
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