MESON Chess Problem Database

Problem Display
PID: 189817 (8/8/2pN4/p2b4/1p1R4/k7/2PQR3/b1KB4 w - - 0 1)

Hutchinson, John E

Pittsburgh Gazette-Times, 1912

8/8/2pN4/p2b4/1p1R4/k7/2PQR3/b1KB4

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qxa5#
  • Tries
    • 1.Qxb4+?
      • 1...Ka2
        • 2.Qxa5#
        • 2.Qa4#
      • 1...axb4!
  • Keys
    • 1.c4!
      • threat
        • 2.Qa2#
      • 1...Bb2+
        • 2.Qxb2#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...bxc4 ep
        • 2.Ra4#
      • 1...b3
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE::QAR2(D),XP(d)
  • Tries
    • Try
      • Q(D);CHECK,XP(c)
      • Refutation
        • P(d);XQ(D)
  • Actual
    • P(C);
    • Threat
      • QAR1(D)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(D),XB(a)
      • B(e);XP(C)::S(G),XB(e)
      • P(c);EP,OGATE,XP(C)::R1(F)
      • P(c);OGATE::QAR2(D),XP(d)
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