MESON Chess Problem Database

Problem Display
PID: 199446 (4Q3/K7/p2N1b1n/2R2b2/1P1k4/p4p1r/r2q3p/2NR3B w - - 0 1)

Bylevski, Aleksandr

Bylevski, Boris

Phenix, 1993

4Q3/K7/p2N1b1n/2R2b2/1P1k4/p4p1r/r2q3p/2NR3B

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sb3#
    • 1...Bd3
      • 2.Sb3#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bg4
      • 2.Qe4#
    • 1...Bd7
      • 2.Qe4#
    • 1...Bc8
      • 2.Qe4#
    • 1...Bh4
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bg5
      • 2.Qe5#
    • 1...Bd8
      • 2.Qe5#
    • 1...Sg4
      • 2.Sxf5#
    • 1...Sf7
      • 2.Sxf5#
    • 1...Sg8
      • 2.Sxf5#
    • 1...f2
      • 2.Rc4#
    • 1...a5
      • 2.Sb5#
  • Tries
    • 1.Rxd2+?
      • 1...Bd3
        • 2.Sb3#
        • 2.Rxd3#
        • 2.Qe4#
      • 1...Rxd2!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qf2#
      • 1...Qxd1
        • 2.Qc3#
      • 1...Qd3
        • 2.Sb3#
      • 1...Bd3
        • 2.Sb3#
      • 1...Bh4
        • 2.Qe5#
      • 1...Bg5
        • 2.Qe5#
      • 1...Sg4
        • 2.Sxf5#
      • 1...f2
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);::S(A)
    • B(h);N_SPINQ(b),SBLOCK::S(A)
    • B(h);N_GUARD::QAR1(H),XB(h)
    • B(h);N_GUARD::QAR1(H)
    • B(j);N_GUARD::QAB1(H)
    • B(j);N_GUARD::QAB1(H),XB(j)
    • S(k);N_GUARD::S(F),XB(h)
    • P(e);::R1(E)
    • P(i);N_GUARD::S(F)
  • Tries
    • Try
      • R(B);CHECK,XQ(b)
      • Refutation
        • R(a);XR(B)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • Q(b);N_SPINQ(b),OGATE,XR(B)::QAB1(H)
      • Q(b);::S(A)
      • B(h);N_SPINQ(b),SBLOCK::S(A)
      • B(j);N_GUARD::QAB1(H)
      • S(k);N_GUARD::S(F),XB(h)
      • P(e);::R1(E)
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