MESON Chess Problem Database

Problem Display
PID: 2547 (B7/1R5b/5p1Q/5R2/2ppk2r/2n1B2P/4Pp2/Kn6 w - - 0 1)

Martindale, Frank W

5. American Chess Congress, 1880

B7/1R5b/5p1Q/5R2/2ppk2r/2n1B2P/4Pp2/Kn6

#2

8 + 9

158 Brentano's Chess Monthly 1881
15 British Chess Magazine 1881
499 Chess Problems (Rayner) 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh3
      • 2.Qf4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rh5
      • 2.Qf4#
    • 1...Bxf5
      • 2.Re7#
    • 1...Sd1
      • 2.Rbb5#
    • 1...Sa2
      • 2.Rbb5#
    • 1...Sa4
      • 2.Rbb5#
    • 1...Sb5
      • 2.Rbxb5#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Re7#
      • 1...Sxe2
        • 2.Rb3#
      • 1...dxe3
        • 2.Qxh4#
      • 1...Sb5
        • 2.Rbxb5#
      • 1...Sd5!
    • 1.Rc5?
      • threat
        • 2.Re7#
      • 1...Sxe2
        • 2.Rb3#
      • 1...dxe3
        • 2.Qxh4#
      • 1...Sd5!
    • 1.Rb6+?
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Sd5!
    • 1.Rf7+?
      • 1...Kxf5
        • 2.Qxf6#
      • 1...Sd5!
    • 1.Qxf6?
      • threat
        • 2.Re5#
        • 2.Re7#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Bxf5
        • 2.Re7#
        • 2.Qxd4#
      • 1...Sxe2
        • 2.Rb3#
      • 1...dxe3
        • 2.Re7#
        • 2.Qe5#
      • 1...Rh5
        • 2.Re7#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Rh6
        • 2.Re5#
        • 2.Re7#
        • 2.Qe5#
      • 1...Bg8
        • 2.Re5#
        • 2.Re7#
        • 2.Qe5#
      • 1...Kxe3!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Re7#
      • 1...Kxe3
        • 2.Re5#
      • 1...Sxe2
        • 2.Rb3#
      • 1...dxe3
        • 2.Qxh4#
      • 1...fxg5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(g);N_GUARD,XP(D)::QAR1(F)
    • R(g);N_GUARD::QAR1(F),XR(g)
    • R(g);N_GUARD::QAR1(F)
    • B(i);SBLOCK,XR(E)::B(H)+R(G),DCHECK
    • S(c);N_GUARD::B(H)+R(G)
    • S(c);N_GUARD::B(H)+R(G),XS(c)
  • Tries
    • Try
      • R(E);
      • Threat
        • B(H)+R(G),DCHECK
      • Vars
        • S(c);N_GUARD,XP(B)::B(H)+R(G)
        • P(e);SBLOCK,XB(C)::QAR(F),XR(g)
        • S(c);N_GUARD::B(H)+R(G),XS(c)
      • Refutation
        • S(c);
    • Try
      • R(E);
      • Threat
        • B(H)+R(G),DCHECK
      • Vars
        • S(c);N_GUARD,XP(B)::B(H)+R(G)
        • P(e);SBLOCK,XB(C)::QAR(F),XR(g)
      • Refutation
        • S(c);
    • Try
      • R(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(E)::QAR1(F),XP(h)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • R(G);CHECK
      • Vars
        • K(f);P_SPINP(h),S_FLIGHT,XR(E)::QAR1(F),XP(h)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(F);XP(h)
      • Threat
        • DUALS(4)
      • Vars
        • S(c);N_GUARD,XP(B)::B(H)+R(G)
      • Refutation
        • K(f);P-FLIGHT,XB(C)
  • Actual
    • R(E);
    • Threat
      • B(H)+R(G),DCHECK
    • Vars
      • K(f);P-FLIGHT,XB(C)::QAB(F)+R(E),DCHECK
      • S(c);N_GUARD,XP(B)::B(H)+R(G)
      • P(e);SBLOCK,XB(C)::QAR(F),XR(g)
      • P(h);OGATE,XR(E)::QAR2(F)
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