MESON Chess Problem Database

Problem Display
PID: 161692 (8/8/7B/3Np3/8/3k4/8/1NK4Q w - - 0 1)

Antonov, Yuri Mikhailovich

Schach-Magazin, 1988

8/8/7B/3Np3/8/3k4/8/1NK4Q

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe4#
      • 1...Ke2
        • 2.Qf1#
      • 1...e4
        • 2.Qxe4#
      • 1...Kd4!
    • 1.Sdc3?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...e4
        • 2.Qxe4#
      • 1...Kc4!
    • 1.Sb6?
      • 1...Kd4
        • 2.Qd5#
      • 1...e4
        • 2.Qd1#
      • 1...Ke2!
    • 1.Be3?
      • 1...Ke2
        • 2.Qd1#
      • 1...e4
        • 2.Qf1#
      • 1...Kc4!
  • Keys
    • 1.Se3!
      • 1...Ke2
        • 2.Qf1#
      • 1...Kd4
        • 2.Qd5#
      • 1...e4
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • P(b);SBLOCK::QAB(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR1(C)
      • P(b);SBLOCK::QAR2(C)
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