MESON Chess Problem Database

Problem Display
PID: 177904 (3N1B2/8/1KP1Rp2/3kP3/R2Nrp2/4p3/b1n1B1n1/7Q w - - 0 1)

Pilchenko, Viacheslav Karlovich

Sahs (Latvia), 1984

3N1B2/8/1KP1Rp2/3kP3/R2Nrp2/4p3/b1n1B1n1/7Q

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...fxe5
      • 2.Rd6#
  • Tries
    • 1.Qd1?
      • threat
        • 2.Ra5#
      • 1...Rxd4
        • 2.Bf3#
      • 1...Rxe5
        • 2.Sxc2#
      • 1...Bc4
        • 2.Bxc4#
      • 1...Sa3!
    • 1.Qh5?
      • threat
        • 2.Rd6#
      • 1...Rxd4
        • 2.exf6#
      • 1...Rxe5
        • 2.Bf3#
      • 1...f5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qd7#
      • 1...Rxd4
        • 2.Ra5#
      • 1...Rxe5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(h);SBLOCK,XP(E)::R1(H)
  • Tries
    • Try
      • Q(A);
      • Threat
        • R(C)
      • Vars
        • R(e);OGATEB,P_SPINR(e),XS(D)::B(B)
        • R(e);N_GUARD,XP(E)::QAR(A)+S(D),XS(b)
        • B(a);N_GUARD::B(B),XB(a)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Threat
        • R1(H)
      • Vars
        • R(e);N_GUARD,XS(D)::QAR(A)+P(E),XP(h)
        • R(e);OGATEB,P_SPINR(e),XP(E)::B(B)
      • Refutation
        • P(h);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • R(e);SBLOCK,XS(D)::R(C)
      • R(e);SBLOCK,XP(E)::R1(H)
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