MESON Chess Problem Database

Problem Display
PID: 167279 (8/6RQ/3p3B/3p3p/KP1k2PP/8/4P3/8 w - - 0 1)

Rydle, D

Nedele, 1905

8/6RQ/3p3B/3p3p/KP1k2PP/8/4P3/8

#2

8 + 4

14868 Pirnie Collection 2018
3713 Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd3#
  • Tries
    • 1.Bf4?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kc3!
    • 1.Re7?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kc3!
    • 1.e3+?
      • 1...Kc4
        • 2.Rc7#
        • 2.Qc2#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc3!
  • Keys
    • 1.Qh8!
      • 1...Kc3
        • 2.Rc7#
      • 1...Kc4
        • 2.Rc7#
      • 1...Ke4
        • 2.Re7#
      • 1...Ke5
        • 2.Re7#
      • 1...hxg4
        • 2.Rxg4#

Anticipated by 120842(1905)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(H)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR1(H)
      • Vars
        • K(a);P-FLIGHT::QAB1(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);
      • Threat
        • QAR1(H)
      • Vars
        • K(a);P-FLIGHT::QAB1(H)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(H)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(a);S_FLIGHT::QAB(H)+R(G),DCHECK
      • K(a);P-FLIGHT::R(G)
      • P(c);OGATE,XP(D)::QAB(H)+R(G),DCHECK,XP(c)
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