MESON Chess Problem Database

Problem Display
PID: 120110 (rb6/r1pN4/k1n5/1R6/p7/Q1B2pK1/8/3b4 w - - 0 1)

Mach, Julius Zdenek

Nymburske Listy, 1941

rb6/r1pN4/k1n5/1R6/p7/Q1B2pK1/8/3b4

#2

5 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qxa4+?
      • 1...Sa5
        • 2.Sc5#
        • 2.Qxa5#
      • 1...Bxa4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qd3#
      • 1...cxd6
        • 2.Rb6#
      • 1...Rb7
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK,XP(c)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);N_PINP(c),P_PINS(e)
    • Threat
      • QAR2(A),XS(e)
    • Vars
      • K(d);N_SPINS(e),OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • P(g);N_GUARD,N_SPINS(e),XQ(A)::R1(D)
      • R(f);SBLOCK::R1(D)
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