MESON Chess Problem Database

Problem Display
PID: 222362 (1Q4n1/3pbN1p/2pp3p/p1Bp4/4kP2/4N1P1/2P2Kb1/8 w - - 0 1)

Kornin, Zalmen

Suomen Shakki, 1998

1Q4n1/3pbN1p/2pp3p/p1Bp4/4kP2/4N1P1/2P2Kb1/8

#2

8 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Sxd6#
    • 1...Bg5
      • 2.Sxd6#
    • 1...Bf6
      • 2.Sxd6#
    • 1...Bd8
      • 2.Sxd6#
    • 1...dxc5
      • 2.Qe5#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Qe5#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Bf6!
    • 1.Qb4+?
      • 1...d4
        • 2.Qxd4#
      • 1...axb4!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qd4#
      • 1...dxc5
        • 2.Qe5#
      • 1...Bf6
        • 2.Sxd6#
      • 1...d4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(i);N_GUARD,P_PINP(D)::S(G),XP(f)
    • B(i);N_GUARD::S(G),XP(f)
    • P(f);OGATE,XB(F)::QAR1(H)
  • Tries
    • Try
      • Q(H);XP(f)
      • Threat
        • QAR1(H)
      • Vars
        • B(i);XQ(H)::S(G),XB(i)
      • Refutation
        • B(i);
    • Try
      • Q(H);CHECK
      • Vars
        • P(d);P_SPINP(d)::QAR1(H),XP(d)
      • Refutation
        • P(c);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • P(f);N_GUARD,XB(F)::QAR1(H)
      • B(i);N_GUARD::S(G),XP(f)
      • P(d);::QAR1(H),XP(d)
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