MESON Chess Problem Database

Problem Display
PID: 206812 (8/7b/8/3R2Qr/1pk5/1n1N4/1K4p1/4RB2 w - - 0 1)

Bylevski, Aleksandr

Sachova skladba, 1991

8/7b/8/3R2Qr/1pk5/1n1N4/1K4p1/4RB2

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Bxd3#
    • 1...Sc1
      • 2.Rxc1#
    • 1...Sd2
      • 2.Rc1#
    • 1...Sd4
      • 2.Rc5#
    • 1...Sa5
      • 2.Rc1#
  • Tries
    • 1.Re4+?
      • 1...Sd4
        • 2.Rexd4#
        • 2.Rdxd4#
        • 2.Rc5#
      • 1...Bxe4!
    • 1.Rc5+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Sxc5!
  • Keys
    • 1.Rd1!
      • threat
        • 2.Se5#
      • 1...Bxd3
        • 2.Bxd3#
      • 1...Sd2
        • 2.Rc1#
      • 1...Sd4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(f);OGATE,P_SPINB(f),XS(D)::B(B),XB(f)
    • S(b);N_GUARD::R(A),XS(b)
    • S(b);N_GUARD::R(A)
    • S(b);N_GUARD,SBLOCK::R1(E)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • B(f);XR(A)
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB1(F)
      • Refutation
        • S(b);XR(E)
  • Actual
    • R(A);
    • Threat
      • B(B)+S(D),DCHECK
    • Vars
      • B(f);OGATE,P_SPINB(f),XS(D)::B(B),XB(f)
      • S(b);N_GUARD::R(A)
      • S(b);N_GUARD,SBLOCK::R1(E)
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