MESON Chess Problem Database

Problem Display
PID: 366 (7b/8/2p3p1/3kBP2/pP2R3/1N1P4/Bp6/1r1b1QK1 w - - 0 1)

Mansfield, Comins

The Observer, 1934

(First published on Sun Aug 5 1934)

7b/8/2p3p1/3kBP2/pP2R3/1N1P4/Bp6/1r1b1QK1

#2

9 + 8

3550 Complete Mansfield/II 1997
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Sa1#
      • 2.Sc1#
      • 2.Sd2#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Sc5#
    • 1...Bf3
      • 2.Sa1#
      • 2.Sc1#
      • 2.Sd2#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Sc5#
    • 1...Bg4
      • 2.Sa1#
      • 2.Sc1#
      • 2.Sd2#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Sc5#
    • 1...Bh5
      • 2.Sa1#
      • 2.Sc1#
      • 2.Sd2#
      • 2.Sd4#
      • 2.Sa5#
      • 2.Sc5#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Re2#
      • 1...Bc2+
        • 2.Re1#
      • 1...Be2+
        • 2.Sc1#
      • 1...Bxb3+
        • 2.Re1#
      • 1...Bxf3+
        • 2.Sc1#
      • 1...Bxe5
        • 2.Rd4#
      • 1...gxf5!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Re2#
      • 1...Bc2+
        • 2.Re1#
      • 1...Be2+
        • 2.Sc1#
      • 1...Bxb3+
        • 2.Re1#
      • 1...Bf3+
        • 2.Sc1#
      • 1...Bg4+
        • 2.Sc1#
      • 1...Bh5+
        • 2.Sc1#
      • 1...Bxe5
        • 2.Rd4#
      • 1...gxf5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(G)
      • Vars
        • B(b);CHECK,N_GUARD::QAB(A)+R(G)
        • B(b);CHECK,N_GUARD::B(C)+S(D)
        • B(b);CHECK,N_GUARD,P_SPINB(b),XS(D)::QAB(A)+R(G)
        • B(b);CHECK,N_GUARD,XQ(A)::B(C)+S(D)
        • B(h);SBLOCK,XB(H)::QAB(A)+R(G),DCHECK
      • Refutation
        • P(g);XP(I)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(G)
    • Vars
      • B(b);CHECK,N_GUARD::QAB(A)+R(G)
      • B(b);CHECK,N_GUARD::B(C)+S(D)
      • B(b);CHECK,N_GUARD,P_SPINB(b),XS(D)::QAB(A)+R(G)
      • B(h);SBLOCK,XB(H)::QAB(A)+R(G),DCHECK
      • P(g);OGATE,XP(I)::QAB(A)
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