MESON Chess Problem Database

Problem Display
PID: 193650 (rn4Q1/p2pP3/pp1kPK2/Rb6/7p/1rR2P1P/B7/8 w - - 0 1)

Ferguson, FS

Pittsburgh Gazette-Times, 1915

rn4Q1/p2pP3/pp1kPK2/Rb6/7p/1rR2P1P/B7/8

#2

9 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.e8S#
    • 1...Rb2
      • 2.e8S#
    • 1...Ra3
      • 2.e8S#
    • 1...Rb4
      • 2.e8S#
    • 1...Bf1
      • 2.e8S#
    • 1...Be2
      • 2.e8S#
    • 1...Bd3
      • 2.e8S#
    • 1...Ba4
      • 2.e8S#
    • 1...Bc6
      • 2.e8S#
    • 1...dxe6
      • 2.Qxe6#
  • Tries
    • 1.Qg3+?
      • 1...Kd5
        • 2.Qe5#
      • 1...hxg3!
    • 1.Qxb8+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Rxb8!
  • Keys
    • 1.Qc8!
      • 1...Kd5
        • 2.Rd3#
      • 1...Rxc3
        • 2.e8S#
      • 1...bxa5
        • 2.Qc5#
      • 1...dxe6
        • 2.Qxe6#
      • 1...Rb1
        • 2.Qc7#
        • 2.e8S#
      • 1...Rb2
        • 2.Qc7#
        • 2.e8S#
      • 1...Ra3
        • 2.Qc7#
        • 2.e8S#
      • 1...Rb4
        • 2.Qc7#
        • 2.e8S#
      • 1...Bf1
        • 2.Qc7#
        • 2.e8S#
      • 1...Be2
        • 2.Qc7#
        • 2.e8S#
      • 1...Bd3
        • 2.Qc7#
        • 2.e8S#
      • 1...Ba4
        • 2.Qc7#
        • 2.e8S#
      • 1...Bc4
        • 2.e8S#
      • 1...Bc6
        • 2.e8S#
      • 1...Sc6
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(a);::P=S
    • B(c);::P=S
    • P(h);OGATE,XP(F)::QAR1(I),XP(h)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);P-FLIGHT,P_SPINB(c),P_SPINR(a)::QAR1(I)
      • Refutation
        • P(b);XQ(I)
    • Try
      • Q(I);CHECK,XS(j)
      • Vars
        • K(f);OGATE,P-FLIGHT,P_SPINB(c),P_SPINR(a)::QAR1(I)
      • Refutation
        • R(i);XQ(I)
  • Actual
    • Q(I);
    • Vars
      • K(f);P-FLIGHT,P_SPINB(c),P_SPINR(a)::R(B)
      • R(a);XR(B)::P=S
      • P(e);N_GUARD,XR(E)::QAB1(I)
      • P(h);OGATE,XP(F)::QAR1(I),XP(h)
      • B(c);::P=S
      • S(j);N_GUARD,S_CUTB(c)::QAR1(I),XP(h)
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