MESON Chess Problem Database

Problem Display
PID: 235057 (n5r1/bnp1B3/2P1B3/1p1NkP2/3Rp3/2P4N/6p1/3R2K1 w - - 0 1)

Shanshin, Valery Yurevich

Freie Presse, 1985

n5r1/bnp1B3/2P1B3/1p1NkP2/3Rp3/2P4N/6p1/3R2K1

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4+
      • 2.cxd4#
    • 1...Sd6
      • 2.Bf6#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Rxe4#
      • 1...Bxd4
        • 2.cxd4#
      • 1...Rg4
        • 2.Sxg4#
      • 1...Sd6
        • 2.Bf6#
      • 1...e3
        • 2.Sd3#
        • 2.Re4#
      • 1...Sc5!
    • 1.Se3?
      • threat
        • 2.Rd5#
      • 1...Bxd4
        • 2.cxd4#
      • 1...Rd8
        • 2.Sg4#
      • 1...Sb6!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Bxd4+
        • 2.cxd4#
      • 1...Rd8
        • 2.Sg4#
      • 1...Sc5
        • 2.Rd5#
      • 1...Sb6
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);CHECK,OGATE,XR(E)::P(C),XB(e)
    • S(f);SBLOCK::B(J)
  • Tries
    • Try
      • S(D);N_SPINR(E)
      • Threat
        • R1(E),XP(b)
      • Vars
        • B(e);OGATE,P_PINS(D),XR(E)::P(C),XB(e)
        • R(i);N_GUARD::S(D),XR(i)
        • S(f);SBLOCK::B(J)
      • Refutation
        • S(f);
    • Try
      • S(F);N_SPINR(E)
      • Threat
        • R1(E)
      • Vars
        • B(e);OGATE,P_PINS(F),XR(E)::P(C),XB(e)
        • R(i);N_GUARD::S(F)
      • Refutation
        • S(h);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(e);CHECK,OGATE,XR(E)::P(C),XB(e)
      • R(i);N_GUARD::S(F)
      • S(f);N_PINR(E)::R1(E)
      • S(h);N_PINR(E)::R1(E),XP(b)
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