MESON Chess Problem Database

Problem Display
PID: 67110 (8/P2B2p1/3p4/4p1P1/3RNp2/5kP1/3P1P1R/1nN3nK w - - 0 1)

Shanshin, Valery Yurevich

2nd Prize, Rychkov/Stepanov MT, 1997

8/P2B2p1/3p4/4p1P1/3RNp2/5kP1/3P1P1R/1nN3nK

#2

11 + 7

5417 FIDE Album (1995-1997) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd2
      • 2.Sxd2#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Rd3#
      • 1...fxg3
        • 2.Bg4#
      • 1...exd4
        • 2.a8Q#
        • 2.a8B#
      • 1...e4!
    • 1.Sf6?
      • threat
        • 2.Bg4#
        • 2.Rd3#
      • 1...fxg3
        • 2.Bg4#
      • 1...exd4
        • 2.Bg4#
      • 1...e4
        • 2.Bg4#
      • 1...gxf6!
    • 1.a8Q?
      • threat
        • 2.Rd3#
      • 1...fxg3
        • 2.Qf8#
      • 1...exd4
        • 2.Sxd6#
      • 1...d5!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Bg4#
      • 1...fxg3
        • 2.Rd3#
      • 1...exd4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);XP(C)::S(H),XS(a)
  • Tries
    • Try
      • S(H);XP(f)
      • Threat
        • R(G)
      • Vars
        • P(d);XP(F)::B(K)
        • P(e);N_GUARD,XR(G)::P=Q
      • Refutation
        • P(e);
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XP(F)::B(K)
        • P(e);XR(G)::B(K)
        • P(e);::B(K)
      • Refutation
        • P(g);XS(H)
    • Try
      • P(J);
      • Threat
        • R(G)
      • Vars
        • P(d);OGATEB,XP(F)::QAR(J)
        • P(e);N_GUARD,XR(G)::QAB(J)+S(H),XP(f)
      • Refutation
        • P(f);
  • Actual
    • R(E);
    • Threat
      • B(K)
    • Vars
      • P(d);XP(F)::R(G)
      • P(e);N_GUARD,XR(G)::R1(E),XP(d)
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