MESON Chess Problem Database

Problem Display
PID: 44887 (2b1n3/Q3P3/1pP1k1P1/1p1R1R2/3p4/3K2pB/6Pr/n7 w - - 0 1)

Mansfield, Comins

Suomen Shakki, 1971

2b1n3/Q3P3/1pP1k1P1/1p1R1R2/3p4/3K2pB/6Pr/n7

#2

9 + 9

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qd7#
    • 1...Bd7
      • 2.Qxd7#
    • 1...Sd6
      • 2.Rde5#
    • 1...Sf6
      • 2.Rfe5#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Rde5#
        • 2.Qe5#
      • 1...Kxe7
        • 2.Rf7#
      • 1...Sd6
        • 2.Rde5#
        • 2.Qxd6#
      • 1...Sc7!
    • 1.Qc7?
      • threat
        • 2.Rde5#
        • 2.Qe5#
      • 1...Sd6
        • 2.Rde5#
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Sxc7!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qe2#
      • 1...Kxe7
        • 2.Rf7#
      • 1...Rxg2
        • 2.Rf7#
      • 1...Sc2
        • 2.Rd7#
      • 1...Sd6
        • 2.Rde5#
      • 1...Sf6
        • 2.Rfe5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::QAB1(H)
    • B(h);N_GUARD::QAB1(H),XB(h)
    • S(i);SBLOCK::R1(D)
    • S(i);SBLOCK::B(C)+R(E),DCHECK
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P-FLIGHT,XP(I)::R1(E)
      • Refutation
        • S(i);
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Refutation
        • S(i);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)
    • Vars
      • K(g);P-FLIGHT,XP(I)::R1(E)
      • R(b);N_GUARD,XP(A)::B(C)+R(E)
      • S(a);N_GUARD::QAB(H)+R(D)
      • S(i);SBLOCK::QAB(H)+R(D),DCHECK
      • S(i);SBLOCK::B(C)+R(E),DCHECK
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