MESON Chess Problem Database

Problem Display
PID: 110244 (8/Q7/1r1pp3/5pnK/5k1p/2R5/8/2N1R3 w - - 0 1)

Labai, Zoltan

Sachove umeni (Ceskoslovensky sach), 1997

8/Q7/1r1pp3/5pnK/5k1p/2R5/8/2N1R3

#2

5 + 7

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qe3#
    • 1...Rb2
      • 2.Qe3#
    • 1...Rb3
      • 2.Qe3#
    • 1...Rb4
      • 2.Qe3#
    • 1...Rb5
      • 2.Qe3#
    • 1...Ra6
      • 2.Qe3#
    • 1...Rc6
      • 2.Qe3#
    • 1...Rb7
      • 2.Qe3#
    • 1...Rb8
      • 2.Qe3#
  • Tries
    • 1.Ree3?
      • threat
        • 2.Se2#
      • 1...Rb2
        • 2.Sd3#
      • 1...Se4!
    • 1.Rxe6?
      • threat
        • 2.Se2#
      • 1...Rb2
        • 2.Qe3#
      • 1...Sxe6!
    • 1.Rce3?
      • threat
        • 2.Sd3#
      • 1...Rb3
        • 2.Se2#
      • 1...Sf3!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qxg5#
      • 1...Sf3
        • 2.Sd3#
      • 1...Sh3
        • 2.Qd4#
      • 1...Se4
        • 2.Se2#
      • 1...Sf7
        • 2.Qd4#
      • 1...Sh7
        • 2.Qd4#

Anticipated by 88776(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • R(e);OGATE::QAB1(E)
  • Tries
    • Try
      • R(B);
      • Threat
        • S(A)
      • Vars
        • R(e);::S(A)
      • Refutation
        • S(d);
    • Try
      • R(B);XP(g)
      • Threat
        • S(A)
      • Vars
        • R(e);OGATE::QAB1(E)
      • Refutation
        • S(d);XR(B)
    • Try
      • R(C);
      • Threat
        • S(A)
      • Vars
        • R(e);::S(A)
      • Refutation
        • S(d);
  • Actual
    • Q(E);
    • Threat
      • QAB1(E),XS(d)
    • Vars
      • S(d);SBLOCK::S(A)
      • S(d);N_GUARD::QAR2(E)
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