MESON Chess Problem Database

Problem Display
PID: 150675 (8/2Q5/8/8/N7/2pR4/n3K3/2k5 w - - 0 1)

Olasz, Imre

5th HM., Salut Public, 1929

8/2Q5/8/8/N7/2pR4/n3K3/2k5

#2

4 + 3

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Rd1#
  • Tries
    • 1.Qxc3+?
      • 1...Kb1
        • 2.Qb2#
      • 1...Sxc3+!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Rd1#
      • 1...Kb1
        • 2.Rd1#
      • 1...Kc2
        • 2.Rxc3#
      • 1...c2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);::R1(B)
  • Tries
    • Try
      • Q(D);CHECK,XP(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • S(b);CHECK,XQ(D)
  • Actual
    • Q(D);N_PINP(c)
    • Threat
      • R1(B)
    • Vars
      • K(a);P-FLIGHT::QAB(D)+R(B),DCHECK
      • K(a);P-FLIGHT::QAB(D)+R(B),DCHECK,XP(c)
      • P(c);SBLOCK::QAR(D)
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