MESON Chess Problem Database

Problem Display
PID: 118649 (8/8/8/Q7/8/2p5/P1Pk4/K3R3 w - - 0 1)

Simonet, Andre

Apprenti Sorcier TT, 1993

8/8/8/Q7/8/2p5/P1Pk4/K3R3

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd8+?
      • 1...Kxc2
        • 2.Qd1#
      • 1...Kxe1!
    • 1.Qb5?
      • threat
        • 2.Qe2#
      • 1...Kxc2
        • 2.Qe2#
      • 1...Kxe1!
    • 1.Qd5+?
      • 1...Kxc2
        • 2.Qd1#
      • 1...Kxe1!
    • 1.Qh5?
      • threat
        • 2.Qd1#
        • 2.Qe2#
      • 1...Kxc2
        • 2.Qd1#
        • 2.Qe2#
      • 1...Kxe1!
    • 1.Qa6?
      • threat
        • 2.Qe2#
      • 1...Kxc2
        • 2.Qe2#
      • 1...Kxe1!
  • Keys
    • 1.Qe5!
      • 1...Kxc2
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK,N_PINP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT,XP(D)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(E);N_PINP(b)
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(E);CHECK,N_PINP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT,XP(D)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(E);N_PINP(b)
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(E);N_PINP(b)
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • Q(E);N_PINP(b)
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAR2(E)
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