MESON Chess Problem Database

Problem Display
PID: 124378 (3R3b/5k2/7Q/4p1P1/2KPP3/8/8/8 w - - 0 1)

Rogoshin, Fyodor Ivanovich

Slovensky Dennik, 1993

3R3b/5k2/7Q/4p1P1/2KPP3/8/8/8

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qxf6#
  • Tries
    • 1.Kd5?
      • 1...Ke7
        • 2.Qf8#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bg7
        • 2.Qe6#
      • 1...exd4!
    • 1.Qf8+?
      • 1...Ke6
        • 2.Rd6#
        • 2.Qe8#
        • 2.d5#
      • 1...Kg6!
    • 1.Qh5+?
      • 1...Ke6
        • 2.Qe8#
      • 1...Ke7
        • 2.Qe8#
      • 1...Kg7!
    • 1.Qe6+?
      • 1...Kg7
        • 2.Qg8#
      • 1...Kxe6!
    • 1.Qg6+?
      • 1...Ke7
        • 2.Qe8#
      • 1...Kxg6!
    • 1.Qh7+?
      • 1...Ke6
        • 2.Qd7#
        • 2.d5#
      • 1...Bg7!
    • 1.Qxh8?
      • threat
        • 2.Qf6#
      • 1...Ke6
        • 2.Qf6#
        • 2.Qe8#
      • 1...Ke7
        • 2.Qf6#
        • 2.Qe8#
      • 1...Kg6!
  • Keys
    • 1.d5!
      • 1...Ke7
        • 2.Qf8#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bg7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD::QAR1(E),XB(c)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
        • B(c);N_GUARD::QAR1(E),XB(c)
        • B(c);SBLOCK::QAB1(E)
      • Refutation
        • P(a);XP(B)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR2(E)
        • K(b);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(E);XB(c)
      • Threat
        • QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(b);P-FLIGHT::QAB1(E)
      • B(c);N_GUARD::QAR1(E),XB(c)
      • B(c);SBLOCK::QAB1(E)
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