MESON Chess Problem Database

Problem Display
PID: 219479 (B3Q3/K1B1P3/8/3NN1p1/np1k4/3P3R/b3P3/2R2rb1 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Schach-Report, 1995

B3Q3/K1B1P3/8/3NN1p1/np1k4/3P3R/b3P3/2R2rb1

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sf3#
    • 1...Re1
      • 2.Sf3#
    • 1...Rf2
      • 2.e3#
    • 1...Rf3
      • 2.Sxf3#
    • 1...Bf2
      • 2.Sf3#
    • 1...Bh2
      • 2.e3#
    • 1...Bb1
      • 2.Rc4#
    • 1...Bc4
      • 2.Rxc4#
    • 1...b3
      • 2.Rc4#
      • 2.Qxa4#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Sc6#
      • 1...Rxc1
        • 2.Sf3#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Rf6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Sf3#
      • 1...Rxc1
        • 2.Sd7#
      • 1...Bxd5
        • 2.Sc6#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Sc3
        • 2.Bb6#
      • 1...Rf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::S(F)
    • R(a);S_CUTB(b)::P(B)
    • R(a);N_GUARD::S(F),XR(a)
    • B(b);S_CUTR(a)::S(F)
    • B(b);N_GUARD::P(B)
    • B(c);N_GUARD::R1(A)
    • B(c);N_GUARD::R1(A),XB(c)
  • Tries
    • Try
      • Q(K);
      • Threat
        • S(F)
      • Vars
        • R(a);N_GUARD,XR(A)::S(F)
        • B(c);OGATE,XS(E)::QAR1(K),XB(c)
        • S(d);N_GUARD::QAB1(K),XS(d)
      • Refutation
        • R(a);
  • Actual
    • Q(K);
    • Threat
      • QAB(K)+S(F),DCHECK
    • Vars
      • R(a);N_GUARD,XR(A)::QAB(K)+S(F)
      • B(c);SBLOCK,XS(E)::QAB(K)+S(F),DCHECK
      • B(c);N_GUARD::R1(A),XB(c)
      • S(d);N_GUARD::B(H)
      • R(a);::QAB(K)+S(F),DCHECK,XR(a)
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