MESON Chess Problem Database

Problem Display
PID: 202318 (5b2/4p1p1/4N1K1/1p1B4/1P2N3/4k3/3p4/3Q4 w - - 0 1)

Kovacs, Florian Janos

3rd Prize, Good Companions, 1923

5b2/4p1p1/4N1K1/1p1B4/1P2N3/4k3/3p4/3Q4

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qxd2#
  • Tries
    • 1.Kg5?
      • 1...Kd3
        • 2.Qxd2#
      • 1...g6!
    • 1.Sg3?
      • threat
        • 2.Qe2#
        • 2.Qf3#
      • 1...Kd3
        • 2.Qb3#
      • 1...Kf2!
    • 1.Ba2?
      • 1...Kxe4
        • 2.Qe2#
      • 1...Kd3!
    • 1.Bc4?
      • threat
        • 2.Qe2#
      • 1...Kxe4
        • 2.Qe2#
      • 1...bxc4!
  • Keys
    • 1.Bb3!
      • 1...Kd3
        • 2.Qf3#
      • 1...Kxe4
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINP(a)::QAR1(A),XP(a)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR1(A),XP(a)
      • Refutation
        • P(e);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(A)
      • Refutation
        • P(c);XB(D)
  • Actual
    • B(D);
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(A)
      • K(b);P-FLIGHT,XS(C)::QAR2(A)
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