MESON Chess Problem Database

Problem Display
PID: 194192 (6B1/r2p2BK/2P1P3/3kN2R/8/1N1P1R2/8/7Q w - - 0 1)

Densmore, Darso James

Pittsburgh Gazette-Times, 1917

6B1/r2p2BK/2P1P3/3kN2R/8/1N1P1R2/8/7Q

#2

11 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...dxc6
      • 2.Sc4#
    • 1...d6
      • 2.Rf1#
      • 2.Rf2#
      • 2.Re3#
      • 2.Rg3#
      • 2.Rfh3#
      • 2.Rf4#
      • 2.Rff5#
      • 2.Rf6#
      • 2.Rf8#
      • 2.e7#
  • Tries
    • 1.Sf7+?
      • 1...Kxe6
        • 2.Re3#
        • 2.Re5#
        • 2.Qe1#
      • 1...Kxc6!
    • 1.Rf7+?
      • 1...Kxe6
        • 2.Rh6#
        • 2.Rxd7#
      • 1...Kd6!
    • 1.Qg1?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...Ra4
        • 2.Qc5#
      • 1...Ra5
        • 2.Qd4#
      • 1...d6
        • 2.Qd4#
        • 2.e7#
      • 1...Kd6!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Rf1#
        • 2.Rf2#
        • 2.Re3#
        • 2.Rg3#
        • 2.Rfh3#
        • 2.Rf4#
        • 2.Rff5#
        • 2.Rf6#
        • 2.exd7#
      • 1...dxc6+
        • 2.Sd7#
      • 1...dxe6+
        • 2.Rf7#
      • 1...d6+
        • 2.e7#
      • 1...Ra1
        • 2.Rf1#
        • 2.exd7#
      • 1...Ra2
        • 2.Rf2#
        • 2.exd7#
      • 1...Ra4
        • 2.exd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);P_PINB(I),SBLOCK,XP(G)::R(F)+S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • R(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(I);
    • Threat
      • DUALS(9)
    • Vars
      • P(c);CHECK,SBLOCK,XP(G)::R(F)+S(E)
      • P(c);CHECK,P_SPINP(c),SBLOCK,XP(H)::QAB(A)+R(D)
      • P(c);CHECK,SBLOCK::B(K)+P(H)
      • R(b);::B(K)+P(H),XP(c)
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