MESON Chess Problem Database

Problem Display
PID: 101516 (Q1B2BN1/nrp3RK/1p1P4/3k1N2/5P2/2PP4/8/8 w - - 0 1)

Guidelli, Giorgio

Good Companions (July), 1917

Q1B2BN1/nrp3RK/1p1P4/3k1N2/5P2/2PP4/8/8

#2

11 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Sge7#
  • Tries
    • 1.Rxc7?
      • threat
        • 2.Se3#
        • 2.Sf6#
        • 2.Sge7#
        • 2.c4#
      • 1...Sxc8
        • 2.Qa2#
      • 1...b5
        • 2.Se3#
        • 2.Sf6#
        • 2.Sge7#
      • 1...Sc6!
    • 1.c4+?
      • 1...Kc6
        • 2.Rxc7#
      • 1...Kc5!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Sd4#
      • 1...cxd6+
        • 2.Sfe7#
      • 1...c5+
        • 2.Sge7#
      • 1...c6+
        • 2.Sg7#
      • 1...Kc5
        • 2.Sd4#
      • 1...Kc6
        • 2.Sd4#
      • 1...Sc6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(e);P_PINR(F),SBLOCK::S(K)
  • Tries
    • Try
      • R(F);P_SPINR(F),XP(e)
      • Threat
        • DUALS(4)
      • Vars
        • S(c);OGATE,XB(I)::QAB(H)
      • Refutation
        • S(c);N_SPINR(d)
    • Try
      • P(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(F),XP(e)
      • Refutation
        • K(a);N_SPINR(d),P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • R(F)+S(D)
    • Vars
      • P(e);CHECK,SBLOCK,XP(E)::R(F)+S(D),DCHECK
      • P(e);CHECK,SBLOCK::S(K)
      • P(e);CHECK,N_SPINR(d),SBLOCK::R(F)+S(D)
      • K(a);N_SPINR(d),P-FLIGHT::R(F)+S(D)
      • K(a);S_FLIGHT::S(D)
      • S(c);N_SPINR(d),SBLOCK::R(F)+S(D),DCHECK
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