MESON Chess Problem Database

Problem Display
PID: 255819 (1B2B1N1/4p3/NPp1kb2/r1p4K/2p1P2p/2n5/5Q2/5r2 w - - 0 1)

Zilahi, Zoltan

1st HM., Wiener Schachzeitung, 1937

1B2B1N1/4p3/NPp1kb2/r1p4K/2p1P2p/2n5/5Q2/5r2

#2

8 + 10

15601 Albrecht-Leiss-Degener 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#
    • 1...Rh1
      • 2.Qf5#
    • 1...Raa1
      • 2.Sxc5#
    • 1...Ra2
      • 2.Sxc5#
    • 1...Ra3
      • 2.Sxc5#
    • 1...Ra4
      • 2.Sxc5#
    • 1...Sb5
      • 2.Sxc5#
  • Tries
    • 1.Qxf1?
      • threat
        • 2.Qh3#
        • 2.Qf5#
      • 1...h3
        • 2.Qxh3#
        • 2.Qf5#
      • 1...Sxe4!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Sc7#
      • 1...Rf5+
        • 2.exf5#
      • 1...Rxc5+
        • 2.Sxc5#
      • 1...Rxa6
        • 2.Qxc6#
      • 1...Be5
        • 2.Qxe7#
      • 1...Sb5
        • 2.Qxc4#
      • 1...Sd5
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 11
  • Sets
    • R(a);N_GUARD::QAB1(A)
    • R(e);N_GUARD::S(D),XP(f)
    • S(b);S_CUTR(e)::S(D),XP(f)
  • Tries
    • Try
      • Q(A);XR(a)
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XP(B)
  • Actual
    • Q(A);P_SPINQ(A),XP(f)
    • Threat
      • S(D)
    • Vars
      • R(a);CHECK,N_PINQ(A),OGATE::P(B),XR(a)
      • R(e);CHECK,XQ(A)::S(D),XR(e)
      • R(e);N_PINQ(A),XS(D)::QAR2(A),XP(g)
      • B(i);N_PINQ(A)::QAR1(A),XP(j)
      • S(b);N_PINQ(A)::QAB(A),XP(c)
      • S(b);N_PINQ(A)::QAR2(A),XP(g)
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