MESON Chess Problem Database

Problem Display
PID: 240150 (1B6/5r1p/3R1N1K/3pN3/3p1kPQ/q3bP1P/p7/4R3 w - - 0 1)

Zilahi, Zoltan

Magyar Sakkelet, 1966

1B6/5r1p/3R1N1K/3pN3/3p1kPQ/q3bP1P/p7/4R3

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5+
      • 2.Qg5#
    • 1...Rxf6+
      • 2.Rxf6#
    • 1...Bc1
      • 2.Sxd5#
      • 2.Sh5#
    • 1...Bg1
      • 2.Sxd5#
      • 2.Sh5#
    • 1...Bd2
      • 2.Sxd5#
      • 2.Sh5#
    • 1...Bf2
      • 2.Sxd5#
      • 2.Sh5#
  • Tries
    • 1.Re6?
      • threat
        • 2.Sxd5#
        • 2.Sh5#
      • 1...Rxf6+
        • 2.Rxf6#
      • 1...Qc5
        • 2.Sh5#
      • 1...Qd6
        • 2.Sh5#
      • 1...Qb3
        • 2.Sh5#
      • 1...Qa5
        • 2.Sh5#
      • 1...Qa8
        • 2.Sh5#
      • 1...Rd7
        • 2.Sh5#
      • 1...Qf8+!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qh2#
      • 1...Kxe5+
        • 2.f4#
      • 1...Rxf6+
        • 2.Rxf6#
      • 1...Bxf2
        • 2.Sh5#
      • 1...Qb2
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);CHECK,P_SPINB(c),S_FLIGHT,XS(F)::QAR2(E)
    • R(g);CHECK,OGATE,XS(H)::R(G),XR(g)
  • Tries
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);CHECK,OGATE,XS(H)::R(G),XR(g)
        • Q(b);::S(H)
        • R(g);::S(H)
      • Refutation
        • Q(b);CHECK
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • K(e);CHECK,OGATE,P_SPINB(c),S_FLIGHT,XS(F)::P(B)
      • R(g);CHECK,OGATE,XS(H)::R(G),XR(g)
      • B(c);XQ(E)::S(H)
      • Q(b);N_GUARD::S(F)
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