MESON Chess Problem Database

Problem Display
PID: 56147 (1bK5/8/1Pp5/3k2p1/2N1R3/2P2B1p/3rR1qB/6Q1 w - - 0 1)

Mansfield, Comins

Complete Mansfield/III, 1999

1bK5/8/1Pp5/3k2p1/2N1R3/2P2B1p/3rR1qB/6Q1

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Rxd2#
    • 1...Qxh2
      • 2.Rf4#
      • 2.Rg4#
      • 2.Rh4#
    • 1...Qg3
      • 2.Rxd2#
    • 1...Qg4+
      • 2.Rxg4#
    • 1...Ra2
      • 2.Qd4#
    • 1...Rb2
      • 2.Qd4#
    • 1...Rc2
      • 2.Qd4#
    • 1...Rxe2
      • 2.Qd4#
    • 1...Rd4
      • 2.Qxd4#
    • 1...c5
      • 2.Rd4#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Rd4#
        • 2.Qc5#
      • 1...Qg4+
        • 2.Rxg4#
      • 1...Qxf3
        • 2.Qc5#
      • 1...Qxg1
        • 2.Rd4#
        • 2.Rf4#
        • 2.Rg4#
        • 2.Rh4#
      • 1...Qxe2
        • 2.Qc5#
        • 2.Qxg5#
      • 1...Rxe2
        • 2.Qd4#
        • 2.Qc5#
      • 1...Rd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...c5
        • 2.Rd4#
        • 2.Qxc5#
      • 1...Qf2
        • 2.Rd4#
        • 2.Qxg5#
      • 1...Bxd6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.c4#
      • 1...Qg4+
        • 2.Rxg4#
      • 1...Qxg1
        • 2.Rc4#
      • 1...Qxe2
        • 2.Rxe2#
        • 2.Qxg5#
      • 1...Qxh2
        • 2.Re6#
      • 1...Qf2
        • 2.Qxg5#
      • 1...Qg3
        • 2.Rxd2#
      • 1...Rd4
        • 2.Qxd4#
      • 1...c5
        • 2.Rd4#
      • 1...Rc2
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::R(B),XR(a)
    • Q(b);CHECK,N_GUARD::B(E)+R(G),XQ(b)
    • R(a);N_GUARD::QAR1(A)
    • R(a);N_GUARD,XR(B)::QAR1(A)
    • R(a);N_GUARD::QAR1(A),XR(a)
    • P(f);SBLOCK::B(E)+R(G),DCHECK
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,N_GUARD::B(E)+R(G),XQ(b)
        • Q(b);XB(E)::QAR1(A)
      • Refutation
        • B(g);XB(C)
  • Actual
    • S(F);
    • Threat
      • P(D)
    • Vars
      • Q(b);CHECK,N_GUARD::B(E)+R(G),XQ(b)
      • Q(b);N_GUARD,XQ(A)::B(E)+R(G)
      • Q(b);N_GUARD,XB(C)::B(E)+R(G)
      • Q(b);OGATE::QAR(A),XP(e)
      • Q(b);N_GUARD::R(B),XR(a)
      • R(a);N_GUARD::QAR1(A),XR(a)
      • P(f);SBLOCK::B(E)+R(G),DCHECK
      • R(a);N_GUARD::QAR1(A)
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