MESON Chess Problem Database

Problem Display
PID: 222806 (8/1K4B1/8/pkrR4/r1b1Q3/8/1P6/5B2 w - - 0 1)

Arnold, William E

Baltimore American and Commercial Advertiser, 1883

8/1K4B1/8/pkrR4/r1b1Q3/8/1P6/5B2

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxc4#
    • 1...Ra2
      • 2.Qxc4#
    • 1...Ra3
      • 2.Qxc4#
    • 1...Rb4
      • 2.Qe8#
  • Tries
    • 1.Bxc4+?
      • 1...Kb4
        • 2.Bc3#
      • 1...Rxc4!
    • 1.Rxc5+?
      • 1...Kb4
        • 2.Qxc4#
      • 1...Kxc5!
  • Keys
    • 1.Bf8!
      • 1...Kb4
        • 2.Qxc4#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Bxf1
        • 2.Rxc5#
      • 1...Ra1
        • 2.Qxc4#
      • 1...Ra2
        • 2.Qxc4#
      • 1...Ra3
        • 2.Qxc4#
      • 1...Rb4
        • 2.Qe8#
      • 1...Be2
        • 2.Rxc5#
      • 1...Bd3
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::QAB1(C),XB(b)
    • R(a);SBLOCK::QAB(C)
  • Tries
    • Try
      • B(A);CHECK,XB(b)
      • Vars
        • K(d);N_SPINR(e),P-FLIGHT::B(F)
      • Refutation
        • R(a);XB(A)
    • Try
      • R(D);CHECK,XR(e)
      • Vars
        • K(d);P-FLIGHT::QAR1(C),XB(b)
      • Refutation
        • K(d);N_SPINB(b),P-FLIGHT,XR(D)
  • Actual
    • B(F);
    • Vars
      • K(d);P-FLIGHT::QAR1(C),XB(b)
      • R(e);N_SPINR(e),OGATE,XR(D)::QAR2(C),XR(e)
      • B(b);N_SPINB(b),XB(A)::R1(D),XR(e)
      • R(a);N_GUARD::QAB1(C),XB(b)
      • R(a);SBLOCK::QAB(C)
      • B(b);::R1(D),XR(e)
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