MESON Chess Problem Database

Problem Display
PID: 157999 (8/8/8/1N1Q4/5p2/4k3/4b3/4K3 w - - 0 1)

Amirov, Talip Khasanovich

Uder, 1976

8/8/8/1N1Q4/5p2/4k3/4b3/4K3

#2

3 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Qd4#
    • 1...f3
      • 2.Qd4#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sf5#
        • 2.Qe4#
      • 1...f3
        • 2.Qe4#
        • 2.Qd2#
      • 1...Bf3
        • 2.Sc4#
        • 2.Sf5#
        • 2.Qd2#
      • 1...Bg4
        • 2.Sc4#
        • 2.Qe4#
      • 1...Bd3!
    • 1.Qe6+?
      • 1...Kd3
        • 2.Qxe2#
      • 1...Kf3!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Qxe2#
      • 1...Kf3!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qe4#
      • 1...Bd3
        • 2.Sd1#
      • 1...Bf3
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::QAB1(C)
    • P(c);SBLOCK::QAB1(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • B(a);N_GUARD::S(B)
      • B(a);SBLOCK::QAB1(C)
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