MESON Chess Problem Database

Problem Display
PID: 193361 (1K6/pP6/k7/rq6/8/3Q4/8/1R6 w - - 0 1)

Keeney, Palmer Gunkel

1st HM., Pittsburgh Gazette-Times TT, 1914

1K6/pP6/k7/rq6/8/3Q4/8/1R6

#2

4 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Qd6#
    • 1...Ra1
      • 2.Qxb5#
    • 1...Ra2
      • 2.Qxb5#
    • 1...Ra3
      • 2.Qxb5#
    • 1...Ra4
      • 2.Qxb5#
  • Tries
    • 1.Kc7?
      • threat
        • 2.b8S#
      • 1...Ra1
        • 2.Rxa1#
        • 2.Qxb5#
      • 1...Ra2
        • 2.Qxb5#
      • 1...Ra3
        • 2.Qxb5#
      • 1...Ra4
        • 2.Qxb5#
      • 1...Qc4+!
    • 1.Kc8?
      • 1...Kb6
        • 2.Qd6#
      • 1...Qxd3
        • 2.b8S#
      • 1...Ra1
        • 2.Qxb5#
      • 1...Ra2
        • 2.Qxb5#
      • 1...Ra3
        • 2.Qxb5#
      • 1...Ra4
        • 2.Qxb5#
      • 1...Qc4+!
    • 1.Qg6+?
      • 1...Qc6
        • 2.Qxc6#
      • 1...Qb6!
    • 1.Qd6+?
      • 1...Qc6
        • 2.Qxc6#
      • 1...Qb6!
  • Keys
    • 1.Ka8!
      • 1...Kb6
        • 2.Qd6#
      • 1...Qxd3
        • 2.b8S#
      • 1...Ra1
        • 2.Qxb5#
      • 1...Ra2
        • 2.Qxb5#
      • 1...Ra3
        • 2.Qxb5#
      • 1...Ra4
        • 2.Qxb5#
      • 1...Qc4
        • 2.b8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_PINP(C),P-FLIGHT::QAR2(B)
    • R(a);N_GUARD::QAB1(B),XQ(b)
  • Tries
    • Try
      • K(D);N_SPINP(C),S_FLIGHT
      • Threat
        • P=S
      • Vars
        • R(a);N_GUARD::QAB1(B),XQ(b)
      • Refutation
        • Q(b);CHECK
    • Try
      • K(D);N_SPINP(C),P-FLIGHT
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • Q(b);N_SPINQ(b),XQ(B)::P=S
        • R(a);N_GUARD::QAB1(B),XQ(b)
      • Refutation
        • Q(b);CHECK
    • Try
      • Q(B);CHECK,N_PINQ(b)
      • Vars
        • Q(b);N_GUARD,N_PINP(C),P_SPINQ(b)::QAR2(B),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • Q(B);CHECK,N_PINQ(b)
      • Vars
        • Q(b);N_GUARD,N_PINP(C),P_SPINQ(b)::QAR2(B),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • K(D);N_SPINP(C),P-FLIGHT
    • Vars
      • K(c);P-FLIGHT::QAR2(B)
      • Q(b);N_SPINQ(b),XQ(B)::P=S
      • R(a);N_GUARD::QAB1(B),XQ(b)
      • Q(b);::P=S
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