MESON Chess Problem Database

Problem Display
PID: 37149 (K1N5/pQ6/r3bR2/3P4/1P1k2p1/2R1n1N1/p1p1P3/B6q w - - 0 1)

Loshinski, Lev Ilich

1st Prize, Source?, 1955

K1N5/pQ6/r3bR2/3P4/1P1k2p1/2R1n1N1/p1p1P3/B6q

#2

10 + 9

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rxe3#
    • 1...Qg2
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qf3
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qe4
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qxd5
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc6#
      • 2.Rc7#
    • 1...Qh2
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qh3
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qh4
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qh5
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qh6
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qh7
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Qh8
      • 2.Rxc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...Sc4
      • 2.Rd3#
    • 1...c1Q
      • 2.Rxc1#
    • 1...c1S
      • 2.Rxc1#
      • 2.Rc2#
      • 2.Rc5#
      • 2.Rc7#
    • 1...c1B
      • 2.Rxc1#
    • 1...c1R
      • 2.Rxc1#
  • Tries
    • 1.Rc6+?
      • 1...Kxd5
        • 2.Se7#
        • 2.Rc5#
        • 2.Qb5#
      • 1...Qxa1!
    • 1.Rf4+?
      • 1...Qe4
        • 2.Rxc2#
        • 2.Rc5#
        • 2.Rc7#
        • 2.Rxe4#
      • 1...Ke5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Rf5#
      • 1...Qxd5+
        • 2.Rc6#
      • 1...Bxd5+
        • 2.Rfc6#
      • 1...Kxd5
        • 2.Rc5#
      • 1...Ke5
        • 2.Rf5#
      • 1...Bxc8
        • 2.Rd6#
      • 1...Sxd5
        • 2.Rf4#
      • 1...Qe4
        • 2.Rc5#
      • 1...Qh4
        • 2.Rc5#
      • 1...Qh6
        • 2.Rc5#
      • 1...Qh7
        • 2.Rc5#
      • 1...Qh8
        • 2.Rc5#
      • 1...Bf5
        • 2.Rd6#
      • 1...Bd7
        • 2.Rd6#
      • 1...Bf7
        • 2.Rd6#
      • 1...Bg8
        • 2.Rd6#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sf5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 15
    • REMOVED MATES = 3
  • Sets
    • K(e);S_FLIGHT::B(A)+R(C),DCHECK,XS(d)
    • S(d);SBLOCK::B(A)+R(C),DCHECK
    • P(c);OGATE::B(A)+R(C),XQ(c)
    • P(c);OGATE::B(A)+R(C),XB(c)
    • P(c);OGATE::B(A)+R(C),XR(c)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • Q(a);XB(A)
    • Try
      • R(G);CHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(H);P_SPINP(F)
    • Threat
      • QAB(H)+R(G)
    • Vars
      • Q(a);CHECK,N_GUARD,SBLOCK,XP(F)::B(A)+R(C)
      • B(h);CHECK,OGATE,SBLOCK,XP(F)::QAB(H)+R(G)
      • K(e);P-FLIGHT,XP(F)::R1(C)
      • K(e);S_FLIGHT::QAB(H)+R(G),DCHECK
      • B(h);OGATE,XS(J)::QAB(H)+R(G)
      • S(d);SBLOCK,XP(F)::QAB(H)+R(G),DCHECK
      • Q(a);N_GUARD::B(A)+R(C)
      • Q(a);N_GUARD,N_PINP(F)::B(A)+R(C)
      • Q(a);N_GUARD,N_PINP(F),P_PINS(J)::B(A)+R(C)
      • B(h);OGATE::QAB(H)+R(G)
      • S(d);SBLOCK::B(A)+R(C),DCHECK
      • S(d);::QAB(H)+R(G),XS(d)
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