MESON Chess Problem Database

Problem Display
PID: 11802 (B1N2Q1n/P1kbR2r/1Np1p2p/b1Rpn2K/4P3/3p4/8/2r3B1 w - - 0 1)

Loshinski, Lev Ilich

2nd Place, Gruziya-50 JT, 1972

B1N2Q1n/P1kbR2r/1Np1p2p/b1Rpn2K/4P3/3p4/8/2r3B1

#2

10 + 12

3753 FIDE Album (1971-1973) 1978
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rxc6#
    • 1...Sef7
      • 2.Rxd7#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Bxe5#
      • 1...Rh1
        • 2.Rxc6#
      • 1...Bc3
        • 2.Rxc6#
      • 1...Sf7
        • 2.Rxd7#
      • 1...Sg6!
    • 1.exd5?
      • threat
        • 2.d6#
      • 1...exd5
        • 2.Sxd5#
      • 1...Sc4
        • 2.Rxc6#
      • 1...Sef7
        • 2.Rxd7#
      • 1...Shf7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qb8#
      • 1...Kxb6
        • 2.Rxc6#
      • 1...Kxd6
        • 2.Rxd7#

This anticipates 248427(1990)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(e);N_GUARD,S_CUTR(a)::R1(C),XP(f)
    • S(e);N_GUARD,S_CUTR(k)::R1(G),XB(j)
  • Tries
    • Try
      • B(A);P_PINS(e)
      • Threat
        • B(A),XS(e)
      • Vars
        • R(a);N_GUARD,P_PINB(A)::R1(C),XP(f)
        • B(c);S_CUTR(a)::R1(C),XP(f)
        • S(l);S_CUTR(k)::R1(G),XB(j)
      • Refutation
        • S(l);
    • Try
      • P(B);XP(d)
      • Threat
        • P(B)
      • Vars
        • P(g);XP(B)::S(E),XP(g)
        • S(e);N_GUARD,S_CUTR(a)::R1(C),XP(f)
        • S(e);N_GUARD,S_CUTR(k)::R1(G),XB(j)
      • Refutation
        • S(l);
  • Actual
    • S(I);
    • Threat
      • QAB1(J)
    • Vars
      • K(i);N_SPINB(j),N_SPINP(f),S_FLIGHT,XS(E)::B(A)+R(C),DCHECK,XP(f)
      • K(i);N_SPINB(j),N_SPINP(f),S_FLIGHT,XS(I)::QAB(J)+R(G),DCHECK,XB(j)
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