MESON Chess Problem Database

Problem Display
PID: 24483 (r2R2bB/n2BN2p/N4K1p/b6Q/2pk1P1R/1prPp3/2p5/2n5 w - - 0 1)

Rossomakho, Yakov V

3rd Place, Baltic Match, 1991-1993

r2R2bB/n2BN2p/N4K1p/b6Q/2pk1P1R/1prPp3/2p5/2n5

#2

10 + 13

6114 Problemschach-Jahrbuch (1994) 1995
4640 Chess Wizardry: The New ABC of Chess Problems 1996
3705 Album Russia (1992-1994) 2000
3681 FIDE Album (1992-1994) 2001
56 The Problemist 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Bf5#
    • 1...Rxd3
      • 2.Kf5#
      • 2.Qe5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...cxd3
      • 2.f5#
  • Tries
    • 1.Sf5+?
      • 1...Kd5
        • 2.Qf3#
      • 1...Kxd3!
    • 1.Sc6+?
      • 1...Kxd3
        • 2.Bf5#
      • 1...Sxc6!
    • 1.Be6+?
      • 1...Bxd8
        • 2.Qd5#
      • 1...Rxd8!
    • 1.Bc8+?
      • 1...Bd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Bxd8!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qe4#
      • 1...Kxd3
        • 2.Bf5#
      • 1...Rxd3
        • 2.Kf5#
      • 1...Sxd3
        • 2.Sf5#
      • 1...cxd3
        • 2.f5#
      • 1...Bd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(g);P-FLIGHT,XP(A)::R(I)+B(G),DCHECK
    • B(m);N_GUARD::QAR1(D),XB(m)
    • P(f);SBLOCK,XP(A)::R(C)+P(B)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(g);P-FLIGHT::QAB(D)
      • Refutation
        • K(g);P-FLIGHT,XP(A)
    • Try
      • S(H);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(A)::R(I)+B(G),DCHECK
      • Refutation
        • S(j);XS(H)
    • Try
      • B(G);CHECK
      • Vars
        • B(h);P_PINS(H),XR(I)::QAR1(D)
      • Refutation
        • R(l);XR(I)
    • Try
      • B(G);CHECK
      • Refutation
        • B(h);P_PINS(H),XR(I)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • K(g);P-FLIGHT,P_SPINP(e),XP(A)::R(I)+B(G),DCHECK
      • R(d);SBLOCK,XP(A)::B(J)+K(F)
      • S(a);SBLOCK,XP(A)::S(H)
      • P(f);SBLOCK,XP(A)::R(C)+P(B)
      • B(m);N_GUARD::QAR1(D),XB(m)
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