MESON Chess Problem Database

Problem Display
PID: 240134 (3B1R2/3p1bp1/6NR/3pbkNP/4p1pP/1Q3Pq1/Kn4n1/8 w - - 0 1)

Zilahi, Zoltan

L'Italia Scacchistica, 1949

3B1R2/3p1bp1/6NR/3pbkNP/4p1pP/1Q3Pq1/Kn4n1/8

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Se7#
    • 1...Bf4
      • 2.Rxf7#
    • 1...Bd6
      • 2.Rxf7#
    • 1...Bc7
      • 2.Rxf7#
    • 1...Bb8
      • 2.Rxf7#
    • 1...Sf4
      • 2.Se7#
    • 1...d4
      • 2.fxe4#
  • Tries
    • 1.Qxd5?
      • threat
        • 2.Rxf7#
        • 2.fxe4#
      • 1...Qxf3
        • 2.Rxf7#
      • 1...exf3
        • 2.Rxf7#
      • 1...Qe1
        • 2.Rxf7#
      • 1...Qf4
        • 2.Se7#
        • 2.Rxf7#
      • 1...e3
        • 2.Rxf7#
      • 1...gxf3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxd7#
      • 1...d4+
        • 2.Rxf7#
      • 1...Bf6
        • 2.fxe4#
      • 1...Sf4
        • 2.Se7#
      • 1...d6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(c);SBLOCK::S(G)
    • B(g);N_GUARD::R(J),XB(j)
    • S(b);SBLOCK::S(G)
    • P(f);N_GUARD,P_PINQ(B)::P(C),XP(d)
  • Tries
    • Try
      • Q(B);N_PINB(j),P_PINB(g),P_SPINQ(B),XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);XP(C)::R(J),XB(j)
        • P(d);XP(C)::R(J),XB(j)
        • Q(c);::R(J),XB(j)
        • P(d);::R(J),XB(j)
      • Refutation
        • P(e);XP(C)
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XP(i)
    • Vars
      • P(f);CHECK,N_SPINB(j),P_SPINB(g)::R(J),XB(j)
      • B(g);N_SPINB(j),P_SPINP(f)::P(C),XP(d)
      • S(b);SBLOCK::S(G)
      • P(i);::QAB(B)
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