MESON Chess Problem Database

Problem Display
PID: 154149 (1b3BK1/n7/Q7/3k2P1/2R5/4p3/2n1P3/8 w - - 0 1)

Dobbs, Gilbert S

Pittsburgh Leader, 1908

1b3BK1/n7/Q7/3k2P1/2R5/4p3/2n1P3/8

#2

6 + 5

119 Tidskrift for Schack 1909
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qd3#
        • 2.Qc4#
      • 1...Ke4!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Sxc6!
    • 1.Qd6+?
      • 1...Kxc4
        • 2.Qd3#
      • 1...Bxd6!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Ke5
        • 2.Qe4#
      • 1...Be5
        • 2.Qf7#
      • 1...Sd4
        • 2.Rc5#

This anticipates 203308(1924)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(D)
      • Refutation
        • S(d);XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XR(B)::QAB1(D)
      • Refutation
        • B(e);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • K(c);S_FLIGHT,XR(B)::QAB1(D)
      • K(c);P-FLIGHT::QAR1(D)
      • B(e);SBLOCK::QAB(D)
      • S(a);SBLOCK::R1(B)
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