MESON Chess Problem Database

Problem Display
PID: 55874 (3QRbn1/1N6/4P1Pp/2p1k3/K6N/3PB2p/3PRp1q/2n5 w - - 0 1)

Mansfield, Comins

3rd Prize, 64 Shakhmatnoe obozrenie, 1978

3QRbn1/1N6/4P1Pp/2p1k3/K6N/3PB2p/3PRp1q/2n5

#2

11 + 9

3750 FIDE Album (1977-1979) 1984
4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4+
      • 2.Bd4#
    • 1...Sa2
      • 2.Bg5#
      • 2.Bxh6#
    • 1...Sb3
      • 2.Bg5#
      • 2.Bxh6#
    • 1...Sxd3
      • 2.Bg5#
      • 2.Bxh6#
    • 1...c4
      • 2.Qd4#
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.Bxf2+?
      • 1...Kf4
        • 2.Re4#
      • 1...Sxe2!
    • 1.Rxf8?
      • threat
        • 2.Bd4#
        • 2.Bf4#
        • 2.Qd6#
      • 1...Qf4+
        • 2.Bd4#
        • 2.Bxf4#
      • 1...Sxe2
        • 2.Qd6#
      • 1...Sxd3
        • 2.Bxf2#
        • 2.Bd4#
        • 2.Bf4#
        • 2.Bxc5#
        • 2.Bg5#
        • 2.Bxh6#
      • 1...Sf6
        • 2.Qd6#
      • 1...Kxe6!
    • 1.d4+?
      • 1...cxd4
        • 2.Qxd4#
      • 1...Ke4!
  • Keys
    • 1.e7!
      • threat
        • 2.Qd6#
      • 1...Qf4+
        • 2.Bd4#
      • 1...Ke6
        • 2.exf8S#
      • 1...Kf6
        • 2.exf8Q#
      • 1...Sxd3
        • 2.Bg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(c);CHECK,SBLOCK::R(B)+B(D),DCHECK
    • P(e);N_GUARD::QAB1(J)
    • P(g);N_GUARD::QAR2(J)
  • Tries
    • Try
      • B(D);CHECK,XP(b)
      • Vars
        • K(f);S_FLIGHT::R1(B)
      • Refutation
        • S(a);XR(B)
    • Try
      • R(K);XB(h)
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XR(B)::QAB1(J)
        • S(i);::QAB1(J)
      • Refutation
        • K(f);P-FLIGHT,XP(G)
    • Try
      • P(C);CHECK
      • Vars
        • P(e);OGATE,XP(C)::QAB1(J),XP(e)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • P(G);
    • Threat
      • QAB1(J)
    • Vars
      • Q(c);CHECK,SBLOCK::R(B)+B(D),DCHECK
      • K(f);P-FLIGHT::PXB(h)=S
      • K(f);S_FLIGHT::PXB(h)=Q
      • S(a);N_GUARD,XP(C)::R(B)+B(D)
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