MESON Chess Problem Database

Problem Display
PID: 195204 (2B2R2/8/2r2b2/2Ppn3/2RK1kpP/5p2/5Q1N/8 w - - 0 1)

McIlvane, John A

Pittsburgh Gazette-Times, 1918

2B2R2/8/2r2b2/2Ppn3/2RK1kpP/5p2/5Q1N/8

#2

8 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Rxf6#
    • 1...Rc7
      • 2.Rxf6#
    • 1...Rxc8
      • 2.Rxf6#
    • 1...Sd3+
      • 2.Kxd5#
    • 1...Sg6+
      • 2.Kxd5#
    • 1...g3
      • 2.Qe3#
      • 2.Qd2#
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Sxe5#
      • 1...Sd3+
        • 2.Kxd5#
      • 1...Sxf3+
        • 2.Kxd5#
      • 1...Sxc4+
        • 2.Se5#
      • 1...Sg6+
        • 2.Kxd5#
        • 2.Se5#
      • 1...Sd7+
        • 2.Se5#
      • 1...Sf7+
        • 2.Se5#
      • 1...gxf3
        • 2.Qh2#
      • 1...g3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(f);N_GUARD,XP(F)::R(H),XB(g)
    • R(f);N_GUARD::R(H),XB(g)
    • R(f);N_GUARD,XB(G)::R(H),XB(g)
    • S(e);CHECK,N_GUARD::R(C)+K(D),XP(d)
  • Actual
    • S(B);XP(a)
    • Threat
      • QAR(A)+S(B),XS(e)
    • Vars
      • S(e);CHECK,N_GUARD::R(C)+K(D),XP(d)
      • S(e);CHECK,N_GUARD,P_SPINS(e),XS(B)::R(C)+K(D),XP(d)
      • S(e);CHECK,XR(C)::QAR(A)+S(B)
      • S(e);CHECK::QAR(A)+S(B)
      • S(e);CHECK,N_SPINB(g)::QAR(A)+S(B)
      • P(c);N_GUARD,P_SPINP(c),SBLOCK,XS(B)::QAB(A)
      • P(c);SBLOCK::QAB1(A)
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