MESON Chess Problem Database

Problem Display
PID: 9878 (8/K1Q5/5P2/3kBB1R/4p3/p4N2/qp4r1/7r w - - 0 1)

Mansfield, Comins

2nd Prize, Il Due Mosse, 1960-1961

8/K1Q5/5P2/3kBB1R/4p3/p4N2/qp4r1/7r

#2

7 + 7

3174 The Two-move Chess Problem Tradition and Development 1966
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Qd6#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Bxe4#
        • 2.Be6#
      • 1...b1Q
        • 2.Be6#
      • 1...b1B
        • 2.Be6#
      • 1...Qb1
        • 2.Be6#
      • 1...Qc4
        • 2.Be6#
        • 2.Qd6#
      • 1...Re1
        • 2.Be6#
      • 1...Rh4
        • 2.Be6#
      • 1...Re2
        • 2.Be6#
      • 1...Rg4
        • 2.Be6#
      • 1...e3
        • 2.Be4#
        • 2.Be6#
      • 1...Rxg5!
    • 1.Bd4?
      • threat
        • 2.Qc5#
      • 1...Qc4
        • 2.Qd7#
      • 1...Rc1
        • 2.Bg4#
      • 1...Rc2
        • 2.Bh3#
      • 1...Rg7!
    • 1.Bxe4+?
      • 1...Ke6
        • 2.Sd4#
        • 2.Qe7#
      • 1...Kxe4!
    • 1.Qa5+?
      • 1...Kc6
        • 2.Sd4#
      • 1...Kc4!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qc6#
      • 1...Qc4
        • 2.Qd6#
      • 1...Rc1
        • 2.Bg3#
      • 1...Rc2
        • 2.Bh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);SBLOCK::QAR1(G)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::B(C)
        • Q(b);::B(C)
        • R(a);::B(C)
        • R(d);::B(C)
      • Refutation
        • R(d);XS(A)
    • Try
      • B(B);
      • Threat
        • QAR1(G)
      • Vars
        • Q(b);SBLOCK::QAR2(G)
        • R(a);N_GUARD::R(D)+B(C)
        • R(d);N_GUARD::R(D)+B(C)
      • Refutation
        • R(d);P_PINQ(G)
    • Try
      • B(C);CHECK,XP(f)
      • Refutation
        • K(g);S_FLIGHT,XB(C)
    • Try
      • Q(G);CHECK
      • Vars
        • K(g);S_FLIGHT::S(A)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • B(C);
    • Threat
      • QAB1(G)
    • Vars
      • Q(b);SBLOCK::QAR1(G)
      • R(a);N_GUARD::R(D)+B(B)
      • R(d);N_GUARD::R(D)+B(B)
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