MESON Chess Problem Database

Problem Display
PID: 7424 (8/3KB3/8/2Nk4/2p5/2Q5/2n5/8 w - - 0 1)

Zimmer, Eligiusz

StrateGems, 1999

8/3KB3/8/2Nk4/2p5/2Q5/2n5/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Se6?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa1
        • 2.Qd4#
      • 1...Se1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Ke4!
    • 1.Qxc2?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Sd4
        • 2.Qe4#
      • 1...cxd3!
    • 1.Qf3+?
      • 1...Ke5
        • 2.Bf6#
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qxc4+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kxc4!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Qe5#
      • 1...Kxc5
        • 2.Qa5#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);XS(a)
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • S(a);P_SPINS(a)::QAB1(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • B(D);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINP(b),XS(B)::QAR2(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
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