MESON Chess Problem Database

Problem Display
PID: 240103 (1B1R4/4pR2/NPp1kbP1/r1p4K/2p1P3/1n6/5Q2/5r2 w - - 0 1)

Zilahi, Zoltan

Norsk Sjakkblad, 1934

1B1R4/4pR2/NPp1kbP1/r1p4K/2p1P3/1n6/5Q2/5r2

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rfa1
      • 2.Qf5#
    • 1...Rb1
      • 2.Qf5#
    • 1...Rc1
      • 2.Qf5#
    • 1...Rd1
      • 2.Qf5#
    • 1...Re1
      • 2.Qf5#
    • 1...Rg1
      • 2.Qf5#
  • Tries
    • 1.Qxf6+?
      • 1...exf6
        • 2.Re8#
      • 1...Rxf6!
  • Keys
    • 1.Qxf1!
      • threat
        • 2.Qh3#
        • 2.Qxc4#
        • 2.Qf5#
      • 1...Ra4
        • 2.Qh3#
        • 2.Qf5#
      • 1...Sd2
        • 2.Qh3#
        • 2.Qf5#
      • 1...Sd4
        • 2.Qxc4#
      • 1...c3
        • 2.Qh3#
        • 2.Qc4#
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK,XB(h)
      • Vars
        • P(i);S_CUTR(a),XQ(A)::R(I)
      • Refutation
        • R(a);XQ(A)
  • Actual
    • Q(A);XR(a)
    • Threat
      • DUALS(3)
    • Vars
      • S(b);::QAB(A),XP(c)
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