MESON Chess Problem Database

Problem Display
PID: 232934 (8/8/8/5K2/7k/3Q2p1/4p3/5b2 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2008

8/8/8/5K2/7k/3Q2p1/4p3/5b2

#2

2 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kh3
        • 2.Qh1#
      • 1...Kh5!
    • 1.Qf3?
      • threat
        • 2.Qg4#
      • 1...Kh3
        • 2.Qh1#
      • 1...Bh3+!
    • 1.Qxg3+?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kxg3!
    • 1.Qd4+?
      • 1...Kh5
        • 2.Qh8#
      • 1...Kh3!
    • 1.Qd8+?
      • 1...Kh5
        • 2.Qg5#
        • 2.Qh8#
      • 1...Kh3!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qh7#
      • 1...Kh3
        • 2.Qxg3#
      • 1...Kh5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR2(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c)::QAR2(A)
      • Refutation
        • B(a);CHECK
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(c)::QAR1(A),XP(c)
      • K(d);P-FLIGHT::QAR2(A)
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