MESON Chess Problem Database

Problem Display
PID: 59230 (3B4/8/3P4/5k2/2N1RNR1/2P2b2/5p2/2K2Q2 w - - 0 1)

Marker, Yuri

Troll, 1999

3B4/8/3P4/5k2/2N1RNR1/2P2b2/5p2/2K2Q2

#2

9 + 3

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qd3#
    • 1...Kxg4
      • 2.Qh3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Rg5#
      • 1...Kxg4
        • 2.Qh3#
      • 1...Bxg4
        • 2.Qb5#
      • 1...Bxe4!
    • 1.Rd4?
      • threat
        • 2.Rg5#
      • 1...Kxg4
        • 2.Qh3#
      • 1...Bxg4
        • 2.Qd3#
      • 1...Be4!
    • 1.Rh4?
      • threat
        • 2.Re5#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Bxe4
        • 2.Qh3#
      • 1...Bg4!
  • Keys
    • 1.Qxf2!
      • 1...Kxe4
        • 2.Qc2#
      • 1...Kxg4
        • 2.Se3#
      • 1...Bxe4
        • 2.Rg5#
      • 1...Bxg4
        • 2.Re5#
      • 1...Bd1
        • 2.Se2#
      • 1...Bh1
        • 2.Sg2#
      • 1...Be2
        • 2.Sxe2#
      • 1...Bg2
        • 2.Sxg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(B)
    • K(c);OGATEB,S_FLIGHT,XR(G)::QAB1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(G)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(G)::QAB1(B)
        • B(b);SBLOCK,XR(G)::QAR(B)
      • Refutation
        • B(b);XR(E)
    • Try
      • R(E);
      • Threat
        • R1(G)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(G)::QAB1(B)
        • B(b);N_GUARD,SBLOCK,XR(G)::QAB(B)
      • Refutation
        • B(b);
    • Try
      • R(G);
      • Threat
        • R1(E)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(E)::QAB1(B)
        • B(b);N_GUARD,SBLOCK,XR(E)::QAB(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);XP(a)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(E)::QAB(B)
      • K(c);S_FLIGHT,XR(G)::S(D)
      • B(b);SBLOCK,XR(E)::R1(G)
      • B(b);SBLOCK,XR(G)::R1(E)
      • B(b);::QAR(B)+S(F)
      • B(b);::QAR(B)+S(F),XB(b)
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