MESON Chess Problem Database

Problem Display
PID: 187601 (8/8/8/8/3p4/p7/3Q4/kbK5 w - - 0 1)

Freimann, Fritz

Source?, 1909

8/8/8/8/3p4/p7/3Q4/kbK5

#2

2 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qxd4#
    • 1...a2
      • 2.Qb2#
      • 2.Qxd4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qxb1#
      • 1...Ba2
        • 2.Qxd4#
      • 1...Bc2
        • 2.Qxa3#
      • 1...a2
        • 2.Qxd4#
      • 1...Bxd3!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qxb1#
      • 1...Ba2
        • 2.Qxd4#
      • 1...Bc2
        • 2.Qxa3#
      • 1...Bd3
        • 2.Qxa3#
      • 1...Be4
        • 2.Qxa3#
      • 1...Bf5
        • 2.Qxa3#
      • 1...Bg6
        • 2.Qxa3#
      • 1...Bh7
        • 2.Qxa3#
      • 1...a2
        • 2.Qb2#
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(b);SBLOCK::QAB(B),XP(d)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XB(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(B),XB(b)
        • B(b);SBLOCK::QAB(B),XP(d)
        • B(b);N_GUARD::QAR2(B),XP(c)
        • P(c);SBLOCK::QAB(B),XP(d)
      • Refutation
        • B(b);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XB(b)
    • Vars
      • K(a);P-FLIGHT::QAB1(B),XB(b)
      • B(b);SBLOCK::QAB(B),XP(d)
      • B(b);N_GUARD::QAR2(B),XP(c)
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