MESON Chess Problem Database

Problem Display
PID: 252828 (4bb1K/6np/1Q2p2r/2NkP3/6R1/1P1N1n2/4P3/2r5 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Comm., Schach, 1994

4bb1K/6np/1Q2p2r/2NkP3/6R1/1P1N1n2/4P3/2r5

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.bxc4#
    • 1...Bh5
      • 2.Qb7#
    • 1...Bg6
      • 2.Qb7#
    • 1...Bf7
      • 2.Qb7#
    • 1...Bd6
      • 2.Qxd6#
    • 1...Sd4
      • 2.e4#
    • 1...Sxe5
      • 2.Sb4#
  • Tries
    • 1.Sa6?
      • threat
        • 2.e4#
      • 1...Re1
        • 2.Sc7#
      • 1...Rc4
        • 2.bxc4#
      • 1...Rc5
        • 2.Sab4#
      • 1...Bc5
        • 2.Sc7#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sg5
        • 2.Rd4#
      • 1...Bg6!
    • 1.Rd4+?
      • 1...Sxd4
        • 2.e4#
      • 1...Kxd4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.e4#
      • 1...Bg6
        • 2.Sf6#
      • 1...Re1
        • 2.Qb7#
      • 1...Rc4
        • 2.bxc4#
      • 1...Rc5
        • 2.Sb4#
      • 1...Bc5
        • 2.Qb7#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sg5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(a);OGATE::P(B),XR(a)
    • B(h);N_GUARD::QAB(G)
    • B(i);N_GUARD::QAR1(G),XB(i)
    • S(b);SBLOCK::P(A)
    • S(b);SBLOCK,XP(F)::S(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • P(A)
      • Vars
        • R(a);N_GUARD::S(E)
        • R(a);OGATE::P(B),XR(a)
        • R(a);S_CUTB(i)::S(E)
        • B(i);S_CUTR(a)::S(E)
        • S(b);N_GUARD::R1(D)
      • Refutation
        • B(h);
    • Try
      • R(D);CHECK
      • Vars
        • S(b);SBLOCK,XR(D)::P(A)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
  • Actual
    • S(E);
    • Threat
      • P(A)
    • Vars
      • B(h);S_CUTR(e)::S(E)
      • R(a);N_GUARD::QAB(G)
      • R(a);OGATE::P(B),XR(a)
      • R(a);S_CUTB(i)::S(C)
      • B(i);S_CUTR(a)::QAB(G)
      • S(b);N_GUARD::R1(D)
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