MESON Chess Problem Database

Problem Display
PID: 109821 (8/8/8/8/7Q/6Kp/4p3/6k1 w - - 0 1)

Spencer Hiatt, ?

Dubuque Chess Journal, 1889

8/8/8/8/7Q/6Kp/4p3/6k1

#2

2 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kxh3?
      • threat
        • 2.Qe1#
      • 1...Kh1
        • 2.Qe1#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Kf1!
    • 1.Qb4?
      • threat
        • 2.Qe1#
      • 1...e1Q+
        • 2.Qxe1#
      • 1...e1B+
        • 2.Qxe1#
      • 1...Kh1
        • 2.Qe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Kf1!
    • 1.Qd4+?
      • 1...Kf1
        • 2.Qf2#
      • 1...Kh1!
  • Keys
    • 1.Qe4!
      • 1...e1Q+
        • 2.Qxe1#
      • 1...e1B+
        • 2.Qxe1#
      • 1...Kf1
        • 2.Qh1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...h2
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(c)
      • Threat
        • QAR2(B)
      • Vars
        • K(a);P-FLIGHT::QAR(B)
        • P(b);::QAR2(B),XQ(b)
        • P(b);::QAR2(B),XS(b)
        • P(b);::QAR2(B),XB(b)
        • P(b);::QAR2(B),XR(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • P(b);CHECK::QAR2(B),XQ(b)
        • P(b);CHECK::QAR2(B),XB(b)
        • K(a);P-FLIGHT::QAR(B)
        • P(b);::QAR2(B),XS(b)
        • P(b);::QAR2(B),XR(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • P(b);CHECK,OGATE::QAR2(B),XQ(b)
      • P(b);CHECK,OGATE::QAR2(B),XB(b)
      • K(a);P-FLIGHT::QAR2(B)
      • P(b);OGATE::QAR2(B),XS(b)
      • P(b);OGATE::QAR2(B),XR(b)
      • P(c);N_GUARD::QAR1(B)
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