MESON Chess Problem Database

Problem Display
PID: 214619 (8/5P2/8/3n4/3Q4/1K4N1/5n2/4k3 w - - 0 1)

Spare, Carl-Erik

Suomen Shakki, 1994

8/5P2/8/3n4/3Q4/1K4N1/5n2/4k3

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.f8Q?
      • threat
        • 2.Qfxf2#
      • 1...Sd1
        • 2.Qf1#
      • 1...Sh1
        • 2.Qf1#
      • 1...Sh3
        • 2.Qf1#
      • 1...Se4
        • 2.Qf1#
      • 1...Sg4
        • 2.Qf1#
      • 1...Se3
        • 2.Qfb4#
      • 1...Sf4
        • 2.Qfb4#
      • 1...Sf6
        • 2.Qfb4#
      • 1...Sd3!
  • Keys
    • 1.Kc2!
      • threat
        • 2.Qd2#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sb4+
        • 2.Qxb4#
      • 1...Sd3
        • 2.Qg1#
      • 1...Se4
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);
      • Threat
        • QAB1(D),XS(b)
      • Vars
        • S(b);OGATE::QAR1(D)
        • S(c);N_GUARD::QAB(D)
      • Refutation
        • S(b);
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAB1(C)
    • Vars
      • S(c);CHECK,N_GUARD::QAR2(C),XS(c)
      • S(c);CHECK,N_GUARD::QAB(C),XS(c)
      • S(b);OGATE::QAR2(C)
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