MESON Chess Problem Database

Problem Display
PID: 21559 (4R3/3p1n2/3Pb3/N1BR1p1N/3Pk3/8/QpP1K3/4n3 w - - 0 1)

Warton, Thomas Joseph

Manchester Weekly Times, 1919

4R3/3p1n2/3Pb3/N1BR1p1N/3Pk3/8/QpP1K3/4n3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.cxd3#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sg5
      • 2.Re5#
    • 1...Sxd6
      • 2.Re5#
    • 1...Sh6
      • 2.Re5#
    • 1...Sd8
      • 2.Re5#
    • 1...Sh8
      • 2.Re5#
    • 1...f4
      • 2.Sf6#
  • Tries
    • 1.Rxf5?
      • threat
        • 2.Sg3#
        • 2.Rf4#
        • 2.Qd5#
      • 1...Sg2
        • 2.Sg3#
        • 2.Qd5#
      • 1...Sd3
        • 2.Sg3#
        • 2.Qd5#
      • 1...Se5
        • 2.Sg3#
        • 2.Rf4#
        • 2.Rxe5#
      • 1...Kxf5!
    • 1.Rxe6+?
      • 1...Se5
        • 2.Rdxe5#
        • 2.Rexe5#
      • 1...dxe6!
  • Keys
    • 1.Qb1!
      • 1...Kxd5
        • 2.Sf6#
        • 2.c4#
      • 1...Sxc2
        • 2.Qh1#
      • 1...Sxd6
        • 2.Re5#
      • 1...Sg2
        • 2.c4#
      • 1...Sd3
        • 2.Qh1#
      • 1...Sf3
        • 2.c4#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sg5
        • 2.Re5#
      • 1...Sh6
        • 2.Re5#
      • 1...Sd8
        • 2.Re5#
      • 1...Sh8
        • 2.Re5#
      • 1...f4
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::P(B),XS(a)
    • S(g);N_GUARD,N_SPINB(e)::R1(G),XS(g)
    • S(g);N_GUARD::R1(G)
    • S(g);N_GUARD,XP(I)::R1(G)
    • P(d);SBLOCK::S(H)
  • Tries
    • Try
      • R(G);XP(d)
      • Threat
        • DUALS(3)
      • Refutation
        • K(c);N_SPINB(e),S_FLIGHT,XR(G)
    • Try
      • R(J);CHECK,XB(e)
      • Refutation
        • P(f);XR(J)
  • Actual
    • Q(A);
    • Vars
      • S(a);OGATE,P_SPINS(a),XP(B)::QAB(A)
      • S(g);N_GUARD,XP(I)::R1(G)
      • S(a);N_GUARD::QAB(A)+P(B)
      • S(a);OGATE::QAB(A)
      • S(g);N_GUARD,N_SPINB(e)::R1(G),XS(g)
      • S(g);N_GUARD::R1(G)
      • P(d);SBLOCK::S(H)
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