MESON Chess Problem Database

Problem Display
PID: 11089 (1Q6/N2R2P1/p7/p3KP1b/kn5R/b1P5/P1Np2r1/3B4 w - - 0 1)

Mansfield, Comins

Grantham Journal TT, 1936

1Q6/N2R2P1/p7/p3KP1b/kn5R/b1P5/P1Np2r1/3B4

#2

11 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Re2+
      • 2.Se3#
    • 1...Rg4
      • 2.Sxb4#
    • 1...Bg6
      • 2.Sa1#
      • 2.Se1#
      • 2.Se3#
      • 2.Sxb4#
    • 1...Be8
      • 2.Sa1#
      • 2.Se1#
      • 2.Se3#
      • 2.Sxb4#
  • Tries
    • 1.Sd4+?
      • 1...Sc2
        • 2.Bxc2#
        • 2.Qb3#
      • 1...Bxd1!
    • 1.Qg8?
      • threat
        • 2.Qb3#
      • 1...Re2+
        • 2.Se3#
      • 1...Bf7!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Rf7#
      • 1...Re2+
        • 2.Se3#
      • 1...Bxe8
        • 2.Sa1#
        • 2.Se1#
        • 2.Se3#
        • 2.Sxb4#
      • 1...Rg4
        • 2.Sxb4#
      • 1...Rg6
        • 2.Rd6#
      • 1...Be2
        • 2.Rd3#
      • 1...Bf3
        • 2.Rd5#
      • 1...Bg4
        • 2.Rd4#
      • 1...Bf7
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(b);CHECK,S_CUTB(g)::B(A)+S(C)
    • R(b);N_SPINS(e),S_CUTB(g)::B(A)+S(C),XS(e)
  • Tries
    • Try
      • S(C);CHECK,N_PINS(e)
      • Refutation
        • B(g);XB(A)
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • R(b);CHECK,S_CUTB(g)::B(A)+S(C)
      • Refutation
        • B(g);
  • Actual
    • Q(K);
    • Threat
      • QAB(K)+R(I)
    • Vars
      • R(b);CHECK,S_CUTB(g)::B(A)+S(C)
      • R(b);N_SPINS(e),S_CUTB(g)::B(A)+S(C),XS(e)
      • R(b);S_CUTB(g)::QAB(K)+R(I)
      • B(g);N_GUARD::QAB(K)+R(I)
      • B(g);N_GUARD,N_SPINS(e)::QAB(K)+R(I)
      • B(g);::QAB(K)+R(I),XB(g)
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