MESON Chess Problem Database

Problem Display
PID: 18037 (2B1Q2K/8/5pp1/2N2P2/Rr2pk2/6R1/1r3p1B/4q3 w - - 0 1)

Mansfield, Comins

Time & Tide, 1952

2B1Q2K/8/5pp1/2N2P2/Rr2pk2/6R1/1r3p1B/4q3

#2

8 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sd3#
    • 1...Rb6
      • 2.Sd3#
    • 1...Rb7
      • 2.Sd3#
    • 1...Rb8
      • 2.Sd3#
    • 1...e3
      • 2.Sd3#
  • Tries
    • 1.Rh3+?
      • 1...Kg5
        • 2.Qxg6#
      • 1...Kg4!
    • 1.Qxe4+?
      • 1...Rxe4
        • 2.Sd3#
      • 1...Qxe4!
    • 1.Qe5+?
      • 1...Kxe5
        • 2.Rd3#
      • 1...fxe5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Se6#
      • 1...Ke5
        • 2.Rd3#
      • 1...Rxb5
        • 2.Sd3#
      • 1...e3
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(d);P_SPINP(e)::S(D)
    • P(e);N_GUARD,P_SPINR(d)::S(D)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(f);S_FLIGHT::QAR1(G),XP(h)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(G);CHECK,XP(e)
      • Vars
        • R(d);P_SPINR(d),XQ(G)::S(D)
      • Refutation
        • Q(a);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XQ(G)::B(A)+R(B)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • S(D)
    • Vars
      • K(f);S_FLIGHT::B(A)+R(B)
      • R(d);P_SPINP(e),XQ(G)::S(D)
      • P(e);P_SPINR(d)::QAB(G)
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