MESON Chess Problem Database

Problem Display
PID: 18 (2Qn4/pR3rp1/k7/8/PP5p/1n6/1K2N3/5B1q w - - 0 1)

Mansfield, Comins

Bath Chronicle, 1930

2Qn4/pR3rp1/k7/8/PP5p/1n6/1K2N3/5B1q

#2

7 + 8

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sa5
      • 2.b5#
  • Tries
    • 1.Rxa7+?
      • 1...Kb6
        • 2.Ra6#
        • 2.Qa6#
      • 1...Kxa7!
  • Keys
    • 1.a5!
      • threat
        • 2.Rb6#
      • 1...Qxb7
        • 2.Sf4#
      • 1...Rxb7
        • 2.Sg1#
      • 1...Sxa5
        • 2.b5#
      • 1...Sxb7
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::P(E)
  • Tries
    • Try
      • R(F);CHECK,XP(e)
      • Refutation
        • K(d);P-FLIGHT,XR(F)
  • Actual
    • P(D);
    • Threat
      • QAB(G)+R(F),DCHECK
    • Vars
      • Q(a);N_GUARD,P_SPINQ(a),XR(F)::B(A)+S(C)
      • R(f);N_GUARD,P_SPINR(f),XR(F)::B(A)+S(C)
      • S(b);SBLOCK,XP(D)::P(E)
      • S(h);P_SPINS(h),SBLOCK,XR(F)::QAB(G)
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