MESON Chess Problem Database

Problem Display
PID: 232937 (8/8/6Q1/3BN3/3k2n1/4NR2/8/nK6 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2010

8/8/6Q1/3BN3/3k2n1/4NR2/8/nK6

#2

6 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rf4+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc5
        • 2.Qc6#
      • 1...Kxe5
        • 2.Re4#
      • 1...Kxe3!
    • 1.Qd3+?
      • 1...Kxe5
        • 2.Sc4#
      • 1...Kc5!
    • 1.Qxg4+?
      • 1...Kc3
        • 2.Sf1#
      • 1...Kxe5
        • 2.Qf4#
      • 1...Kc5!
  • Keys
    • 1.Qb6+!
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(F)
        • K(b);S_FLIGHT,XS(E)::R1(C)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(E)::S(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK,XS(c)
      • Vars
        • K(b);S_FLIGHT::R(C)+S(B)
        • K(b);S_FLIGHT,XS(E)::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);CHECK
    • Vars
      • K(b);S_FLIGHT::QAB1(F)
      • K(b);S_FLIGHT,XS(E)::R1(C)
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