MESON Chess Problem Database

Problem Display
PID: 258424 (4R3/6nN/4BR1q/3Pp1Bp/1N1pk2K/1r4p1/1n1PP3/6b1 w - - 0 1)

Williams, Philip Hamilton

English Mechanic and World of Science, 1892

(First published on Fri Oct 21 1892)

4R3/6nN/4BR1q/3Pp1Bp/1N1pk2K/1r4p1/1n1PP3/6b1

#2

10 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg5+
      • 2.Sxg5#
    • 1...Qxf6
      • 2.Sxf6#
    • 1...Rf3
      • 2.exf3#
    • 1...Sf5+
      • 2.Bxf5#
    • 1...Sxe8
      • 2.Bf5#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Rf4#
      • 1...Qxg5+
        • 2.Sxg5#
      • 1...Sf5+
        • 2.Bxf5#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Rxb4
        • 2.Bf3#
      • 1...Sxe8
        • 2.Bf5#
      • 1...Rf3
        • 2.Bxf3#
        • 2.exf3#
      • 1...Be3
        • 2.Bf3#
      • 1...Sd3
        • 2.Bf3#
      • 1...Se6
        • 2.Bf5#
      • 1...hxg4+!
  • Keys
    • 1.Bh3!
      • threat
        • 2.Rf4#
      • 1...Qxg5+
        • 2.Sxg5#
      • 1...Sf5+
        • 2.Bxf5#
      • 1...Qxf6
        • 2.Sxf6#
      • 1...Rxb4
        • 2.Bg2#
      • 1...Sxe8
        • 2.Bf5#
      • 1...Rf3
        • 2.exf3#
      • 1...Be3
        • 2.Bg2#
      • 1...Sd3
        • 2.Bg2#
      • 1...Se6
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(i);CHECK,XB(F)::S(I),XQ(i)
    • Q(i);P_PINB(F),XR(H)::S(I),XQ(i)
    • R(c);OGATE::P(B),XR(c)
    • S(j);CHECK,N_GUARD::B(G),XS(j)
    • S(j);N_GUARD,XR(J)::B(G)
  • Tries
    • Try
      • B(G);P_PINP(g)
      • Threat
        • R1(H)
      • Vars
        • Q(i);CHECK,XB(F)::S(I),XQ(i)
        • S(j);CHECK,N_GUARD::B(G),XS(j)
        • Q(i);P_PINB(F),XR(H)::S(I),XQ(i)
        • R(c);N_GUARD,XS(C)::B(G)
        • S(j);N_GUARD,N_SPINP(g),XR(J)::B(G)
        • B(a);S_CUTR(c)::B(G)
        • S(b);S_CUTR(c)::B(G)
        • S(j);N_GUARD,N_SPINP(g)::B(G)
      • Refutation
        • P(h);CHECK,XB(G)
  • Actual
    • B(G);P_PINP(g)
    • Threat
      • R1(H)
    • Vars
      • Q(i);CHECK,XB(F)::S(I),XQ(i)
      • S(j);CHECK,N_GUARD::B(G),XS(j)
      • Q(i);P_PINB(F),XR(H)::S(I),XQ(i)
      • R(c);N_GUARD,XS(C)::B(G)
      • S(j);N_GUARD,N_SPINP(g),XR(J)::B(G)
      • R(c);OGATE::P(B),XR(c)
      • B(a);S_CUTR(c)::B(G)
      • S(b);S_CUTR(c)::B(G)
      • S(j);N_GUARD,N_SPINP(g)::B(G)
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