MESON Chess Problem Database

Problem Display
PID: 10449 (1b1R2B1/p2qPN2/N3P3/RP1k4/Q4P2/8/4K3/8 w - - 0 1)

Mansfield, Comins

1st Prize, Skakbladet, 1964

1b1R2B1/p2qPN2/N3P3/RP1k4/Q4P2/8/4K3/8

#2

11 + 4

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Tries
    • 1.Kd3?
      • threat
        • 2.Qb3#
        • 2.Qa2#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Be5
        • 2.Qb3#
        • 2.Qa2#
        • 2.Qc4#
      • 1...Kxe6+!
    • 1.Rxd7+?
      • 1...Bd6
        • 2.Rxd6#
      • 1...Kxe6!
    • 1.Qb3+?
      • 1...Kd4
        • 2.Ra4#
        • 2.Qd3#
      • 1...Ke4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qd1#
      • 1...Qxb5+
        • 2.Qc4#
      • 1...Qxe6+
        • 2.Qe4#
      • 1...Kxd6
        • 2.Rxd7#
      • 1...Qxd6
        • 2.b6#
      • 1...Bxd6
        • 2.exd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(4)
      • Refutation
        • K(a);CHECK,N_SPINQ(c),S_FLIGHT,XP(G)
    • Try
      • R(J);CHECK,XQ(c)
      • Vars
        • B(d);N_GUARD,P_SPINB(d)::R1(J),XB(d)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);N_SPINQ(c),S_FLIGHT
  • Actual
    • S(I);N_PINQ(c)
    • Threat
      • QAR(B)
    • Vars
      • Q(c);CHECK,P_SPINQ(c),XP(E)::QAB1(B)
      • Q(c);CHECK,P_SPINQ(c),XP(G)::QAB1(B)
      • K(a);OGATEB,P-FLIGHT,P_SPINQ(c),XS(I)::R1(J),XQ(c)
      • Q(c);N_GUARD,P_SPINQ(c),XS(I)::R(D)+P(E)
      • B(d);SBLOCK,XS(I)::B(K)+P(G),XQ(c)
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