MESON Chess Problem Database

Problem Display
PID: 207842 (3n4/2rPK3/1Np5/4k3/2Q2R2/5r2/8/bbN5 w - - 0 1)

Bylevski, Aleksandr

Bylevski, Boris

Sachova skladba, 1992

3n4/2rPK3/1Np5/4k3/2Q2R2/5r2/8/bbN5

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Qd4#
    • 1...Rd3
      • 2.Qe4#
    • 1...Rxd7+
      • 2.Sxd7#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Ba2
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
  • Tries
    • 1.Sd3+?
      • 1...Rxd3
        • 2.Qe4#
      • 1...Bxd3!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qc5#
      • 1...Rxd7+
        • 2.Sxd7#
      • 1...Rxf4
        • 2.Qxf4#
      • 1...Rc3
        • 2.Qd4#
      • 1...Rd3
        • 2.Qe4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Ba2
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sb7
        • 2.Qe6#
      • 1...c5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);S_CUTB(a)::QAB1(B)
    • R(c);S_CUTB(b)::QAR1(B)
    • R(f);CHECK,XP(E)::S(D),XR(f)
    • B(a);N_GUARD::QAB1(B),XB(a)
    • B(b);N_GUARD::QAR1(B)
    • B(b);N_GUARD::QAR1(B),XB(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(c);XS(A)::QAR1(B)
      • Refutation
        • B(b);XS(A)
  • Actual
    • S(A);
    • Threat
      • QAR2(B)
    • Vars
      • R(f);CHECK,XP(E)::S(D),XR(f)
      • R(c);OGATE,XR(C)::QAB1(B),XR(c)
      • R(c);S_CUTB(a)::QAB1(B)
      • R(c);S_CUTB(b)::QAR1(B)
      • B(a);N_GUARD::QAB1(B),XB(a)
      • B(b);N_GUARD::QAR1(B)
      • B(b);N_GUARD::QAR1(B),XB(b)
      • S(g);N_GUARD::QAR1(B),XS(g)
      • S(g);N_GUARD::QAR1(B)
      • P(e);N_GUARD::QAR1(B)
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