MESON Chess Problem Database

Problem Display
PID: 257285 (K1k5/1N3R2/3P4/3N2pp/p2n2b1/4p3/8/brrq2nQ w - - 0 1)

Gavrilov, Constantin Grigorievich

Wiener Schachzeitung, 1937

K1k5/1N3R2/3P4/3N2pp/p2n2b1/4p3/8/brrq2nQ

#2

6 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sxb6#
    • 1...Rc7
      • 2.Rxc7#
    • 1...Bb2
      • 2.Sb6#
    • 1...Bc3
      • 2.Rc7#
    • 1...Be2
      • 2.d7#
    • 1...Bf3
      • 2.d7#
    • 1...Bd7
      • 2.Se7#
    • 1...Sc2
      • 2.Rc7#
    • 1...Sb3
      • 2.Sb6#
    • 1...Sb5
      • 2.Sb6#
    • 1...Sf5
      • 2.d7#
    • 1...Sc6
      • 2.Rc7#
    • 1...Se6
      • 2.d7#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qe8#
      • 1...Bd7
        • 2.Se7#
      • 1...Sc6
        • 2.Rc7#
      • 1...Se6
        • 2.d7#
      • 1...Be6!
  • Keys
    • 1.Qxh5!
      • threat
        • 2.Qh8#
      • 1...Bxh5
        • 2.d7#
      • 1...Bd7
        • 2.Se7#
      • 1...Sc2
        • 2.Rc7#
      • 1...Sde2
        • 2.Qxg4#
      • 1...Sb3
        • 2.Sb6#
      • 1...Sdf3
        • 2.Qxg4#
      • 1...Sb5
        • 2.Sb6#
      • 1...Sf5
        • 2.d7#
      • 1...Sc6
        • 2.Rc7#
      • 1...Se6
        • 2.d7#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::S(B),XR(b)
    • R(c);N_GUARD::R1(E),XR(c)
    • B(a);S_CUTR(b)::S(B)
    • B(a);S_CUTR(c)::R1(E)
    • B(i);N_GUARD::P(C)
    • B(i);SBLOCK::S(B)
    • S(h);S_CUTR(c)::R1(E)
    • S(h);S_CUTR(b)::S(B)
    • S(h);S_CUTB(i)::P(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • B(i);SBLOCK::S(B)
        • S(h);S_CUTR(c)::R1(E)
        • S(h);S_CUTB(i)::P(C)
      • Refutation
        • B(i);
  • Actual
    • Q(A);XP(k)
    • Threat
      • QAR(A)
    • Vars
      • B(i);N_GUARD,XQ(A)::P(C)
      • B(i);SBLOCK::S(B)
      • S(h);S_CUTR(c)::R1(E)
      • S(h);N_GUARD,S_CUTQ(d)::QAB(A),XB(i)
      • S(h);S_CUTR(b)::S(B)
      • S(h);S_CUTB(i)::P(C)
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