MESON Chess Problem Database

Problem Display
PID: 44801 (1b6/4n1Q1/3p1N1B/1rR1R2K/1p1k1N1p/2pP3r/3n2B1/8 w - - 0 1)

Shanshin, Valery Yurevich

2nd Prize, Shakhmatnaya kompozitsiya, 2000

1b6/4n1Q1/3p1N1B/1rR1R2K/1p1k1N1p/2pP3r/3n2B1/8

#2

9 + 10

56 The Problemist 2002
23 Die Schwalbe 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Se2#
      • 2.Se6#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Red5#
        • 2.Rf5#
        • 2.Rg5#
      • 1...Rxc5
        • 2.Rd5#
      • 1...dxc5
        • 2.Re4#
        • 2.Rd5#
      • 1...Sd5
        • 2.Rexd5#
      • 1...d5
        • 2.Rexd5#
      • 1...Re3
        • 2.Red5#
      • 1...Sf3
        • 2.Rc4#
        • 2.Red5#
      • 1...Sc4
        • 2.Rxc4#
        • 2.Red5#
      • 1...Se4
        • 2.Rc4#
        • 2.Red5#
      • 1...Sf5
        • 2.Red5#
        • 2.Rxf5#
      • 1...Sc6
        • 2.Red5#
      • 1...Sg6
        • 2.Red5#
      • 1...Sg8
        • 2.Red5#
      • 1...dxe5!
    • 1.Red5+?
      • 1...Ke3
        • 2.Sg4#
      • 1...Sxd5!
  • Keys
    • 1.Re3!
      • threat
        • 2.Se6#
      • 1...Rxc5+
        • 2.S6d5#
      • 1...Kxe3
        • 2.Sg4#
      • 1...Kxc5
        • 2.Sd7#
      • 1...Rxe3
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(3)
      • Vars
        • R(g);P_PINR(E),XR(D)::QAB(I)+R(E),DCHECK
        • S(i);::QAB(I)+R(E),DCHECK,XS(i)
        • P(h);::QAB(I)+R(E),DCHECK,XP(h)
        • R(c);::QAB(I)+R(E),DCHECK
        • S(i);::QAB(I)+R(E),DCHECK
      • Refutation
        • P(h);P_SPINP(h),XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(e);S_FLIGHT::S(G)
      • Refutation
        • S(i);XR(E)
  • Actual
    • R(E);P_SPINR(D)
    • Threat
      • S(C)
    • Vars
      • R(g);CHECK,SBLOCK,XR(D)::QAB(I)+S(G)
      • K(e);S_FLIGHT,XR(E)::S(G)
      • K(e);S_FLIGHT,XR(D)::S(G)
      • R(c);SBLOCK,XR(E)::QAB(I)+S(G)
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