MESON Chess Problem Database

Problem Display
PID: 235521 (8/8/8/4Np2/Kp6/4k3/8/B4Q2 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sem Shakhmatnikh not, 2015

8/8/8/4Np2/Kp6/4k3/8/B4Q2

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf3#
    • 1...f4
      • 2.Qe1#
  • Tries
    • 1.Kxb4?
      • 1...Ke4
        • 2.Qf3#
      • 1...f4
        • 2.Qe1#
      • 1...Kd2!
    • 1.Bc3?
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qf3#
      • 1...bxc3!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Qd4#
        • 2.Qf3#
      • 1...Kxf2!
  • Keys
    • 1.Kb3!
      • 1...Kd2
        • 2.Sc4#
      • 1...Ke4
        • 2.Qf3#
      • 1...f4
        • 2.Qe1#

FEATURES

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