MESON Chess Problem Database

Problem Display
PID: 224811 (2n2r2/1N6/p7/3pkBBP/8/3Q3K/8/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2004

2n2r2/1N6/p7/3pkBBP/8/3Q3K/8/8

#2

6 + 5

5454 Near Snap 2020
15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Qe3#
    • 1...d4
      • 2.Qe4#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Qe3#
      • 1...d4
        • 2.Qe4#
      • 1...Sd6!
    • 1.Qc3+?
      • 1...d4
        • 2.Qa5#
        • 2.Qc5#
      • 1...Kxf5!
    • 1.Qf3?
      • threat
        • 2.Qf4#
      • 1...Rxf5
        • 2.Qe3#
      • 1...d4
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qd4+?
      • 1...Kxf5
        • 2.Qxd5#
      • 1...Kxd4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qf4#
      • 1...Kxf5
        • 2.Qxd5#
      • 1...Rxf5
        • 2.Qe3#
      • 1...d4
        • 2.Qa5#

Anticipated by 224495(1887), 51031(1913), 190141(1913), 121520(1948)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(e);SBLOCK,XB(C)::QAR2(A)
    • P(a);N_GUARD::QAR1(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • P(a);N_GUARD::QAR1(A)
      • Refutation
        • S(d);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(e);SBLOCK,XB(C)::QAR2(A)
        • P(a);N_GUARD::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,XB(C)::QAR2(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P-FLIGHT,XB(C)::QAR2(A),XP(a)
      • R(e);SBLOCK,XB(C)::QAR2(A)
      • P(a);OGATEB,SBLOCK::QAR(A)
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