MESON Chess Problem Database

Problem Display
PID: 6339 (4n2b/q3RB2/2pNP3/1npk4/4NP2/1P1K4/8/8 w - - 0 1)

Mansfield, Comins

The Problemist, 1928

4n2b/q3RB2/2pNP3/1npk4/4NP2/1P1K4/8/8

#2

8 + 7

3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.exd7#
    • 1...c4+
      • 2.bxc4#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Se3#
      • 1...c4+
        • 2.bxc4#
      • 1...Bd4!
  • Keys
    • 1.Rd7!
      • threat
        • 2.e7#
      • 1...c4+
        • 2.bxc4#
      • 1...Qxd7
        • 2.exd7#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sbc7
        • 2.Sxe8#
      • 1...Sec7
        • 2.Sxb5#
      • 1...Sg7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(e);OGATE::B(H)+P(F),XQ(e)
    • P(b);CHECK,OGATE::P(A),XP(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • P(b);CHECK,OGATE::P(A),XP(b)
      • Refutation
        • B(g);
  • Actual
    • R(G);
    • Threat
      • B(H)+P(F)
    • Vars
      • P(b);CHECK,OGATE::P(A),XP(b)
      • Q(e);OGATE,XR(G)::B(H)+P(F),XQ(e)
      • S(a);N_GUARD,S_CUTB(g)::S(C)
      • S(a);N_GUARD,S_CUTQ(e)::R(G)+S(E),XS(f)
      • S(f);N_GUARD,S_CUTQ(e)::R(G)+S(E),XS(a)
      • S(f);N_GUARD,S_CUTB(g)::S(C)
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