MESON Chess Problem Database

Problem Display
PID: 68980 (3n1N2/3R1p2/4PK1k/3p1npb/3rQ1P1/5N1R/8/6br w - - 0 1)

Townsend, Alonzo

The Chess Player's Chronicle (Sampson), 1873

3n1N2/3R1p2/4PK1k/3p1npb/3rQ1P1/5N1R/8/6br

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Rxh5#
    • 1...Se3
      • 2.Qh7#
    • 1...Sg3
      • 2.Qh7#
    • 1...Sh4
      • 2.Qh7#
    • 1...Sd6
      • 2.Qh7#
    • 1...Se7
      • 2.Qh7#
    • 1...Sg7
      • 2.Qh7#
    • 1...fxe6
      • 2.Rh7#
  • Tries
    • 1.Sh2?
      • threat
        • 2.Rxh5#
      • 1...Sg3
        • 2.Qh7#
      • 1...Sh4
        • 2.Qh7#
      • 1...Sg7
        • 2.Qh7#
      • 1...Rxh2!
    • 1.Sxd4?
      • threat
        • 2.Sxf5#
      • 1...Sxd4
        • 2.Qh7#
      • 1...fxe6
        • 2.Rh7#
      • 1...Se3
        • 2.Qh7#
      • 1...Sg3
        • 2.Qh7#
      • 1...Sh4
        • 2.Qh7#
      • 1...Sd6
        • 2.Qh7#
      • 1...Se7
        • 2.Qh7#
      • 1...Sg7
        • 2.Qh7#
      • 1...Bxd4+!
    • 1.Rxh1?
      • threat
        • 2.Rxh5#
      • 1...Sg3
        • 2.Qh7#
      • 1...Sh4
        • 2.Qh7#
      • 1...Sg7
        • 2.Qh7#
      • 1...Bh2!
    • 1.Rxf7?
      • threat
        • 2.Rh7#
      • 1...Sg7
        • 2.Qg6#
        • 2.Qh7#
      • 1...Sxf7!
    • 1.Qxf5?
      • threat
        • 2.Qh7#
        • 2.Qxg5#
      • 1...Rxg4
        • 2.Qh7#
      • 1...Sxe6
        • 2.Qh7#
      • 1...Be3
        • 2.Qh7#
      • 1...Rf4!
  • Keys
    • 1.Sh4!
      • threat
        • 2.Sxf5#
      • 1...Sxh4
        • 2.Qh7#
      • 1...gxh4
        • 2.g5#
      • 1...fxe6
        • 2.Rh7#
      • 1...Se3
        • 2.Qh7#
      • 1...Sg3
        • 2.Qh7#
      • 1...Sd6
        • 2.Qh7#
      • 1...Se7
        • 2.Qh7#
      • 1...Sg7
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);S_CUTR(b)::R1(B),XB(g)
    • S(e);OGATE::QAR1(C)
    • S(e);N_SPINB(g),OGATE::QAR1(C)
    • P(i);OGATE,XP(E)::R1(G)
  • Tries
    • Try
      • S(A);
      • Threat
        • R1(B),XB(g)
      • Vars
        • S(e);OGATE::QAR1(C)
        • S(e);N_SPINB(g),OGATE::QAR1(C)
      • Refutation
        • R(b);XS(A)
    • Try
      • S(A);XR(c)
      • Threat
        • S(A),XS(e)
      • Vars
        • S(e);OGATE,XS(A)::QAR1(C)
        • P(i);OGATE,XP(E)::R1(G)
        • S(e);OGATE::QAR1(C)
        • S(e);N_SPINB(g),OGATE::QAR1(C)
      • Refutation
        • B(a);CHECK,XS(A)
    • Try
      • R(B);XR(b)
      • Threat
        • R1(B),XB(g)
      • Vars
        • S(e);OGATE::QAR1(C)
        • S(e);N_SPINB(g),OGATE::QAR1(C)
      • Refutation
        • B(a);N_SPINB(g)
    • Try
      • R(G);XP(i)
      • Threat
        • R1(G)
      • Refutation
        • S(j);XR(G)
    • Try
      • Q(C);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(D)::QAR1(C)
        • S(j);XP(E)::QAR1(C)
        • B(a);::QAR1(C)
      • Refutation
        • R(c);P_PINQ(C)
  • Actual
    • S(A);N_PINB(g)
    • Threat
      • S(A),XS(e)
    • Vars
      • S(e);OGATE,XS(A)::QAR1(C)
      • P(f);OGATE,XS(A)::P(D)
      • P(i);OGATE,XP(E)::R1(G)
      • S(e);OGATE::QAR1(C)
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