MESON Chess Problem Database

Problem Display
PID: 145065 (1K6/7B/3p4/RN1nkpN1/5R1r/2p1n3/8/Bb4Q1 w - - 0 1)

Mathias, WG

Daily News, 1928

(First published on Sat Apr 7 1928)

1K6/7B/3p4/RN1nkpN1/5R1r/2p1n3/8/Bb4Q1

#2

8 + 8

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qd4#
    • 1...Sf1
      • 2.Qd4#
    • 1...Sc2
      • 2.Rxf5#
    • 1...Sg2
      • 2.Qd4#
    • 1...Sc4
      • 2.Qd4#
    • 1...Sg4
      • 2.Qd4#
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Se2#
        • 2.Sxd5#
      • 1...Kxf4
        • 2.Se2#
      • 1...Kf6
        • 2.Sxd5#
      • 1...Rxf4
        • 2.Sce4#
      • 1...Rh2
        • 2.Se2#
      • 1...Sd1
        • 2.Qd4#
      • 1...Sc2
        • 2.Rxf5#
      • 1...Sc4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(c);OGATE::QAB1(B)
    • S(c);N_GUARD,S_CUTB(a)::R1(C),XP(g)
  • Actual
    • S(E);P_PINS(e),XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • K(f);N_SPINS(e),S_FLIGHT,XR(C)::S(E)
      • K(f);N_SPINS(e),P_SPINP(g),S_FLIGHT::B(A)+S(E),DCHECK,XS(e)
      • R(d);SBLOCK,XR(C)::B(A)+S(E)
      • R(d);::B(A)+S(E)
      • S(c);OGATE::QAB1(B)
      • S(c);N_GUARD,S_CUTB(a)::R1(C),XP(g)
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