MESON Chess Problem Database

Problem Display
PID: 265952 (8/1N3Kb1/1Q6/Np1kp1P1/n4p2/1rn2R2/3rPPR1/B1qb3B w - - 0 1)

Juk, Aleksandr I

Buletin Problemistic, 1994

8/1N3Kb1/1Q6/Np1kp1P1/n4p2/1rn2R2/3rPPR1/B1qb3B

#2

11 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qc6#
    • 1...Se4
      • 2.Qe6#
    • 1...e4
      • 2.Qd6#
  • Tries
    • 1.Rg1?
      • threat
        • 2.Rd3#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Rd4
        • 2.Qc6#
      • 1...Se4
        • 2.Qe6#
      • 1...e4
        • 2.Qd6#
      • 1...Ke4!
    • 1.Rh2?
      • threat
        • 2.Rd3#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Rd4
        • 2.Qc6#
      • 1...Se4
        • 2.Qe6#
      • 1...e4
        • 2.Qd6#
      • 1...Ke4!
    • 1.Rgg3?
      • threat
        • 2.Rd3#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Rd4
        • 2.Qc6#
      • 1...Se4
        • 2.Qe6#
      • 1...e4
        • 2.Qd6#
      • 1...Ke4!
    • 1.Rd3+?
      • 1...Ke4
        • 2.Sd6#
        • 2.Qg6#
      • 1...Rxd3!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rd3#
      • 1...Ke4
        • 2.Rfxf4#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Rd4
        • 2.Qc6#
      • 1...Se4
        • 2.Qe6#
      • 1...e4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::QAB1(I)
    • S(e);SBLOCK::QAB1(I)
    • P(j);SBLOCK::QAR1(I)
  • Tries
    • Try
      • R(E);
      • Threat
        • B(B)+R(F),DCHECK
      • Vars
        • R(c);::B(B)+R(F),DCHECK,XR(c)
        • R(c);SBLOCK::QAB1(I)
        • S(e);SBLOCK::QAB1(I)
        • P(j);SBLOCK::QAR1(I)
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(B)+R(F),DCHECK
      • Vars
        • R(c);::B(B)+R(F),DCHECK,XR(c)
        • R(c);SBLOCK::QAB1(I)
        • S(e);SBLOCK::QAB1(I)
        • P(j);SBLOCK::QAR1(I)
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(B)+R(F),DCHECK
      • Vars
        • R(c);::B(B)+R(F),DCHECK,XR(c)
        • R(c);SBLOCK::QAB1(I)
        • S(e);SBLOCK::QAB1(I)
        • P(j);SBLOCK::QAR1(I)
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • R(c);XR(F)
  • Actual
    • R(E);
    • Threat
      • B(B)+R(F),DCHECK
    • Vars
      • K(i);P_SPINP(g),S_FLIGHT::B(B)+R(F),DCHECK,XP(g)
      • R(c);::B(B)+R(F),DCHECK,XR(c)
      • R(c);SBLOCK::QAB1(I)
      • S(e);SBLOCK::QAB1(I)
      • P(j);SBLOCK::QAR1(I)
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