MESON Chess Problem Database

Problem Display
PID: 408 (1KQ2B2/1Rp2k2/p5Rn/r6B/b6N/8/7q/8 w - - 0 1)

Mansfield, Comins

The Observer, 1943

(First published on Sun Jul 4 1943)

1KQ2B2/1Rp2k2/p5Rn/r6B/b6N/8/7q/8

#2

7 + 7

3550 Complete Mansfield/II 1997
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Bd6?
      • threat
        • 2.Qe6#
        • 2.Qf8#
      • 1...Qe5
        • 2.Qf8#
      • 1...Qa2
        • 2.Qf8#
      • 1...Qe2
        • 2.Qf8#
      • 1...Qh3
        • 2.Qf8#
      • 1...Re5
        • 2.Qf8#
      • 1...Bb3
        • 2.Rxc7#
        • 2.Qd7#
        • 2.Qf8#
      • 1...Bd7
        • 2.Qxd7#
        • 2.Qf8#
      • 1...Be8
        • 2.Qe6#
      • 1...Qxd6!
    • 1.Bxh6?
      • threat
        • 2.Qe6#
        • 2.Qf8#
      • 1...Ke7
        • 2.Re6#
      • 1...Qe5
        • 2.Qf8#
      • 1...Qa2
        • 2.Qf8#
      • 1...Qe2
        • 2.Qf8#
      • 1...Qh3
        • 2.Qf8#
      • 1...Re5
        • 2.Qf8#
      • 1...Bb3
        • 2.Qd7#
        • 2.Qf8#
      • 1...Bd7
        • 2.Qxd7#
        • 2.Qf8#
      • 1...Be8
        • 2.Qe6#
      • 1...Qd6!
    • 1.Bg7?
      • threat
        • 2.Qe6#
        • 2.Qf8#
      • 1...Ke7
        • 2.Re6#
      • 1...Be8
        • 2.Qe6#
      • 1...Qe5
        • 2.Qf8#
      • 1...Qa2
        • 2.Qf8#
      • 1...Qe2
        • 2.Qf8#
      • 1...Qh3
        • 2.Qf8#
      • 1...Re5
        • 2.Qf8#
      • 1...Bb3
        • 2.Qf8#
      • 1...Bd7
        • 2.Qf8#
      • 1...Qd6!
  • Keys
    • 1.Be7!
      • threat
        • 2.Qf8#
      • 1...c5+
        • 2.Rg3#
      • 1...c6+
        • 2.Bd6#
      • 1...Kxe7
        • 2.Re6#
      • 1...Be8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::QAR1(F)
        • R(c);::QAR1(F)
        • B(b);::QAB1(F)
      • Refutation
        • Q(a);XB(G)
    • Try
      • B(G);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P-FLIGHT::R1(C)
        • Q(a);::QAR1(F)
        • R(c);::QAR1(F)
        • B(b);::QAB1(F)
      • Refutation
        • Q(a);
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P-FLIGHT::R1(C)
        • B(b);::QAB1(F)
        • Q(a);::QAR1(F)
        • R(c);::QAR1(F)
        • B(b);::QAR1(F)
        • B(b);N_SPINP(f)::QAR1(F)
      • Refutation
        • Q(a);
  • Actual
    • B(G);N_PINP(f)
    • Threat
      • QAR1(F)
    • Vars
      • P(f);CHECK,S_CUTR(c)::B(B)+R(C)
      • P(f);CHECK,OGATEB::R(D)+B(G)
      • K(g);P-FLIGHT,P_SPINP(f),XB(G)::R1(C)
      • B(b);SBLOCK::QAB1(F)
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