MESON Chess Problem Database

Problem Display
PID: 172517 (3k4/1K2n3/8/2R4Q/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

3k4/1K2n3/8/2R4Q/8/8/8/8

#2

3 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Re5?
      • 1...Sd5
        • 2.Qe8#
      • 1...Sf5
        • 2.Qe8#
      • 1...Sc6
        • 2.Qe8#
      • 1...Sg6
        • 2.Qd1#
      • 1...Sc8
        • 2.Qe8#
      • 1...Sg8
        • 2.Qd1#
        • 2.Qe8#
      • 1...Kd7!
  • Keys
    • 1.Qf7!
      • 1...Kd7
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Rc8#
      • 1...Sf5
        • 2.Rc8#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sg6
        • 2.Rd5#
        • 2.Rc8#
      • 1...Sc8
        • 2.Rxc8#
      • 1...Sg8
        • 2.Rd5#
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • S(a);::QAR1(B)
        • S(a);N_GUARD::QAB(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::R(A)
      • S(a);N_GUARD::R1(A)
      • S(a);N_GUARD::R(A)
      • S(a);N_GUARD::R1(A),XS(a)
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