MESON Chess Problem Database

Problem Display
PID: 47094 (3r3B/5q2/8/2R5/4k1P1/3p2Q1/2P2p2/b4K2 w - - 0 1)

Menzies, J

The Westminster Papers, 1878

3r3B/5q2/8/2R5/4k1P1/3p2Q1/2P2p2/b4K2

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Re5#
    • 1...Ra8
      • 2.cxd3#
    • 1...Rb8
      • 2.cxd3#
    • 1...Rc8
      • 2.cxd3#
    • 1...Re8
      • 2.cxd3#
    • 1...Rf8
      • 2.cxd3#
    • 1...Rg8
      • 2.cxd3#
    • 1...Bd4
      • 2.cxd3#
  • Tries
    • 1.Re5+?
      • 1...Kd4
        • 2.Qxd3#
      • 1...Bxe5!
    • 1.Rf5?
      • threat
        • 2.Qf4#
        • 2.Qf3#
      • 1...Rxh8
        • 2.Qf4#
        • 2.Qxd3#
      • 1...Bxh8
        • 2.Qf4#
      • 1...dxc2
        • 2.Qf3#
      • 1...Qf6
        • 2.Qf4#
      • 1...Qg7
        • 2.Qf4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bf6
        • 2.Qf4#
      • 1...Bg7
        • 2.Qf4#
      • 1...Qc7
        • 2.Qf3#
      • 1...Qxf5!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qe5#
      • 1...Rxd4
        • 2.Re5#
      • 1...Bxd4
        • 2.cxd3#
      • 1...Qf3
        • 2.Qe5#
      • 1...Qf4
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(f);SBLOCK,S_CUTB(a)::R1(E)
    • R(f);N_GUARD::P(B),XP(c)
    • B(a);S_CUTR(f)::P(B),XP(c)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(C),XP(c)
      • Refutation
        • B(a);XR(E)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XB(F)::QAR1(C)
        • P(c);XP(B)::QAB1(C)
        • Q(e);::QAR1(C)
        • B(a);N_GUARD::QAR1(C),XB(a)
        • B(a);::QAR1(C)
        • Q(e);::QAB1(C)
      • Refutation
        • Q(e);XR(E)
  • Actual
    • B(F);
    • Threat
      • QAR1(C)
    • Vars
      • K(d);P-FLIGHT,XB(F)::QAB1(C)
      • R(f);SBLOCK,XB(F)::R1(E)
      • B(a);SBLOCK,XB(F)::P(B),XP(c)
      • Q(e);SBLOCK::QAR1(C)
      • Q(e);SBLOCK::QAB1(C),XP(c)
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