MESON Chess Problem Database

Problem Display
PID: 206791 (8/8/1N6/8/2QNk1b1/6K1/5P2/8 w - - 0 1)

Jiran, A

Svetozor, 1870

8/8/1N6/8/2QNk1b1/6K1/5P2/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Sf3#
      • 2.Sc6#
  • Tries
    • 1.Qe2+?
      • 1...Kxd4
        • 2.Qe3#
      • 1...Bxe2!
    • 1.Qb3?
      • threat
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Ke5!
    • 1.Qe6+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Bxe6!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qe3#
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Ke5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAB1(C)
      • Refutation
        • B(b);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
        • K(a);OGATE,P-FLIGHT,XS(D)::QAB1(C)
      • Refutation
        • B(b);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);P-FLIGHT,XS(D)::QAB1(C)
      • K(a);P-FLIGHT::QAB1(C)
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Developed and maintained by Brian Stephenson.
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