MESON Chess Problem Database

Problem Display
PID: 169050 (8/2PPp3/2PkP3/3p4/1P1Q1K2/3N4/3P4/8 w - - 0 1)

Agapov, Igor Alexeyevich

Sp. HM., SuperProblem 066. TT, 2012

8/2PPp3/2PkP3/3p4/1P1Q1K2/3N4/3P4/8

#2

9 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qxd5+?
      • 1...Kxc7
        • 2.d8Q#
      • 1...Kxd5!
    • 1.d8Q+?
      • 1...Kxe6
        • 2.Q8xd5#
      • 1...Kxc6!
  • Keys
    • 1.c8S+!
      • 1...Kxc6
        • 2.Qb6#
      • 1...Kxe6
        • 2.d8S#
      • 1...Kc7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK,XP(a)
      • Vars
        • K(b);S_FLIGHT,XP(H)::P=Q
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
    • Try
      • P(I);CHECK
      • Vars
        • K(b);N_SPINP(a),OGATE,P-FLIGHT,XP(G)::QAB1(I),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(F)
  • Actual
    • P(H);CHECK
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT,XP(F)::QAR1(D)
      • K(b);N_SPINP(a),P-FLIGHT,XP(G)::P=S
      • K(b);N_SPINP(a),S_FLIGHT::QAB1(D)
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