MESON Chess Problem Database

Problem Display
PID: 120807 (5R2/6nr/2P1kppp/R7/1QK5/3P4/8/8 w - - 0 1)

Thomson, Robert Gavin

Hobbies, 1906

5R2/6nr/2P1kppp/R7/1QK5/3P4/8/8

#2

6 + 6

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Rd5?
      • threat
        • 2.Qe1#
        • 2.Qd6#
      • 1...Se8
        • 2.Qe1#
      • 1...Sf5!
    • 1.Re8+?
      • 1...Kf7
        • 2.Qe7#
        • 2.Qf8#
      • 1...Sxe8!
  • Keys
    • 1.Kc5!
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kf5
        • 2.Kd6#
      • 1...Ke7
        • 2.Kd5#
      • 1...f5
        • 2.Qe1#

Anticipated by 4576(1880), 95234(1898)

This anticipates 189559(1911), 18161(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR(B)
      • Refutation
        • S(e);
    • Try
      • R(F);CHECK
      • Refutation
        • S(e);XR(F)
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);P_SPINP(b),S_FLIGHT::R(D)+K(C)
      • K(a);P-FLIGHT::QAB(B)+K(C)
      • P(b);::QAR(B)
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