MESON Chess Problem Database

Problem Display
PID: 62406 (8/3Q4/r7/2p1k3/3R4/B4P2/4K1B1/8 w - - 0 1)

Gold, Samuel

The Chess Monthly (Hoffer), 1879

8/3Q4/r7/2p1k3/3R4/B4P2/4K1B1/8

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Re4#
      • 2.Qd5#
  • Tries
    • 1.Rd5+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Kf6!
    • 1.Qf5+?
      • 1...Kxd4
        • 2.Qxc5#
      • 1...Kxf5!
    • 1.Qd6+?
      • 1...Kf5
        • 2.Rd5#
      • 1...Rxd6!
    • 1.Qg7+?
      • 1...Kf5
        • 2.Bh3#
      • 1...Ke6
        • 2.Bh3#
      • 1...Rf6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Rd5#
      • 1...Kxd4
        • 2.Bb2#
      • 1...cxd4
        • 2.f4#
      • 1...Rf6
        • 2.Qd5#
      • 1...Re6
        • 2.Qf4#
      • 1...Rd6
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(E)::QAB1(F),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::R(E)
      • Refutation
        • R(c);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::B(B)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(F);
    • Threat
      • R1(E)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(E)::B(C)
      • P(a);SBLOCK,XR(E)::P(D)
      • R(c);SBLOCK::QAR1(F)
      • R(c);SBLOCK::QAB1(F)
      • R(c);SBLOCK::R1(E)
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