MESON Chess Problem Database

Problem Display
PID: 241241 (6R1/5K2/p1ppN3/PbPkp1p1/2n2P2/3P1P2/Q7/7B w - - 0 1)

Pilchenko, Viacheslav Karlovich

Shakhmaty (Riga), 1979

6R1/5K2/p1ppN3/PbPkp1p1/2n2P2/3P1P2/Q7/7B

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qxc4#
      • 2.dxc4#
    • 1...exf4
      • 2.Rxg5#
    • 1...e4
      • 2.Rxg5#
      • 2.dxe4#
      • 2.fxe4#
    • 1...dxc5
      • 2.Rd8#
  • Tries
    • 1.Rxg5?
      • 1...Ba4
        • 2.Qxc4#
        • 2.dxc4#
      • 1...dxc5!
    • 1.Qf2?
      • threat
        • 2.Sc7#
      • 1...exf4
        • 2.Qd4#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Se3!
    • 1.fxg5?
      • 1...dxc5
        • 2.Rd8#
      • 1...Ba4
        • 2.Qxc4#
        • 2.dxc4#
      • 1...e4!
  • Keys
    • 1.fxe5!
      • threat
        • 2.f4#
      • 1...Kxe5
        • 2.Rxg5#
      • 1...dxe5
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(d);OGATEB,XP(E)::R(J),XP(e)
    • P(h);OGATEB,XP(G)::R(J)
  • Tries
    • Try
      • R(J);P_PINP(d),XP(e)
      • Refutation
        • P(h);XP(G)
    • Try
      • Q(B);N_PINS(a)
      • Threat
        • S(H)
      • Vars
        • P(d);N_GUARD,XP(E)::QAR1(B)
        • P(h);OGATE,XP(G)::QAR1(B),XP(h)
      • Refutation
        • S(a);
    • Try
      • P(E);XP(e)
      • Vars
        • P(h);OGATEB,XP(G)::R(J)
      • Refutation
        • P(d);
  • Actual
    • P(E);XP(d)
    • Threat
      • B(A)+P(D)
    • Vars
      • K(c);N_SPINS(a),OGATEB,P-FLIGHT,XP(E)::R(J),XP(e)
      • P(h);OGATEB,SBLOCK,XP(E)::R(J)
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