MESON Chess Problem Database

Problem Display
PID: 102879 (8/5K1R/2R2p2/3pk3/4p2N/1p4PP/1p6/1Q6 w - - 0 1)

Likhomanov, Yuri Evstafevich

Moscow Ty., 1992

8/5K1R/2R2p2/3pk3/4p2N/1p4PP/1p6/1Q6

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Sf3#
  • Tries
    • 1.Sf3+?
      • 1...Kf5
        • 2.Rxf6#
        • 2.Rh5#
      • 1...exf3!
    • 1.Sg6+?
      • 1...Kf5
        • 2.Rh5#
      • 1...Kd4!
    • 1.Rxf6?
      • 1...d4
        • 2.Rh5#
      • 1...e3
        • 2.Sf3#
      • 1...Kd4!
    • 1.Qd3?
      • threat
        • 2.Re6#
      • 1...d4
        • 2.Qb5#
      • 1...exd3!
    • 1.Qg1?
      • threat
        • 2.Re6#
      • 1...e3
        • 2.Qxe3#
      • 1...d4!
  • Keys
    • 1.Sf5!
      • 1...Kxf5
        • 2.Rh5#
      • 1...d4
        • 2.Rc5#
      • 1...e3
        • 2.Re6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • P(c);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(c)::R(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(E);XP(f)
      • Vars
        • P(d);SBLOCK::R(G)
        • P(c);N_GUARD::S(D)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • R1(E)
      • Vars
        • P(d);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • R1(E)
      • Vars
        • P(c);OGATEB::QAR2(A),XP(c)
      • Refutation
        • P(d);
  • Actual
    • S(D);
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINP(c),XS(D)::R(G)
      • P(d);OGATEB::R(E)
      • P(c);::R1(E)
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