MESON Chess Problem Database

Problem Display
PID: 258743 (8/3N1bp1/1Q6/1PR5/2prkpRN/8/3p1P2/3K4 w - - 0 1)

Dumitru, Ionel

Buletin Problemistic, 1988

8/3N1bp1/1Q6/1PR5/2prkpRN/8/3p1P2/3K4

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Re5#
    • 1...Bd5
      • 2.Qg6#
    • 1...Bg6
      • 2.Qxg6#
    • 1...Bg8
      • 2.Qg6#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Sc5#
      • 1...Rxd7
        • 2.Qe3#
      • 1...Rd3
        • 2.Rgxf4#
        • 2.Re5#
      • 1...Rd5
        • 2.Qe3#
      • 1...Rd6
        • 2.Qe3#
      • 1...Kd3!
    • 1.Rcg5?
      • threat
        • 2.Sc5#
      • 1...Rxd7
        • 2.Qe3#
      • 1...Rd3
        • 2.Re5#
      • 1...Rd5
        • 2.Qe3#
      • 1...Rd6
        • 2.Qe3#
      • 1...Kd3!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Qf3#
      • 1...Bd5
        • 2.Qg6#
      • 1...Rd5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Kd3
        • 2.Qxd4#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Rxd5
        • 2.Qe3#
      • 1...Bxd5
        • 2.Qg6#
      • 1...Rd3
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK::R1(F)
    • B(f);N_GUARD::QAB(G)
    • B(f);N_GUARD::QAB(G),XB(f)
  • Tries
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • R(c);OGATE,XS(H)::QAR1(G)
        • R(c);OGATE::QAR1(G)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • R(c);OGATE,XS(H)::QAR1(G)
        • R(c);SBLOCK::R1(F)
        • R(c);OGATE::QAR1(G)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);N_SPINP(e),OGATE,S_FLIGHT::QAR2(G)
        • B(f);N_GUARD,P_SPINB(f)::QAB(G)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • R(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);N_SPINP(e),P_SPINR(c),S_FLIGHT::QAR1(G),XR(c)
      • K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(F)::QAB1(G)
      • R(c);OGATE,SBLOCK,XR(F)::QAR1(G)
      • B(f);N_GUARD,SBLOCK,XR(F)::QAB(G)
      • R(c);SBLOCK::R1(F)
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