MESON Chess Problem Database

Problem Display
PID: 18158 (8/B4p1B/K7/8/2p1Np2/1p1k4/2pb2QR/1nnr4 w - - 0 1)

Mansfield, Comins

Time & Tide, 1953

8/B4p1B/K7/8/2p1Np2/1p1k4/2pb2QR/1nnr4

#2

6 + 10

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qf3#
    • 1...Bc3
      • 2.Sf6#
      • 2.Qf3#
    • 1...Bb4
      • 2.Qf3#
    • 1...Ba5
      • 2.Qf3#
    • 1...Sa2
      • 2.Qe2#
    • 1...Se2
      • 2.Qxe2#
  • Tries
    • 1.Sxd2+?
      • 1...f5
        • 2.Qf3#
      • 1...Kc3!
    • 1.Sf2+?
      • 1...Ke2
        • 2.Sd3#
      • 1...Kc3!
    • 1.Qf1+?
      • 1...Se2
        • 2.Qxe2#
      • 1...Rxf1!
    • 1.Qh3+?
      • 1...f3
        • 2.Qd7#
      • 1...Be3!
    • 1.Qf2?
      • threat
        • 2.Qd4#
      • 1...Bc3
        • 2.Sc5#
        • 2.Sf6#
        • 2.Qf3#
      • 1...Se2
        • 2.Qxe2#
      • 1...Be3!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qd4#
      • 1...Bc3
        • 2.Sf6#
      • 1...Be3
        • 2.Sc5#
      • 1...Se2
        • 2.Sf2#
      • 1...f6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(e);N_GUARD::QAR2(A)
    • S(b);N_GUARD::QAB1(A)
    • S(b);N_GUARD::QAB1(A),XS(b)
  • Tries
    • Try
      • S(C);CHECK,XB(e)
      • Vars
        • P(j);P_SPINP(j)::QAR2(A)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(g);S_FLIGHT::QAR(A)+S(C)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • P(i);P_SPINP(i)::QAR(A)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • B(e);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • B(e);SBLOCK::B(F)+S(C)
      • B(e);SBLOCK::B(F)+S(C),DCHECK
      • S(b);SBLOCK::B(F)+S(C),DCHECK
      • P(j);OGATE::QAR(A)
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