MESON Chess Problem Database

Problem Display
PID: 198533 (8/1n4N1/3p2P1/3Rp1QP/n1P1kr1b/4p2p/4Bp1P/3N1K2 w - - 0 1)

Butler, GV

Western Daily Mercury, 1919

(First published on Fri Feb 7 1919)

8/1n4N1/3p2P1/3Rp1QP/n1P1kr1b/4p2p/4Bp1P/3N1K2

#2

10 + 10

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Bd3#
    • 1...Rg4
      • 2.Qxe3#
      • 2.Qxg4#
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxe3#
      • 2.Qxf5#
    • 1...Rf6
      • 2.Qxe3#
    • 1...Rf7
      • 2.Qxe3#
    • 1...Rf8
      • 2.Qxe3#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sac5
      • 2.Sc3#
    • 1...Sb6
      • 2.Sc3#
  • Tries
    • 1.Rd4+?
      • 1...exd4
        • 2.Qd5#
      • 1...Kxd4!
    • 1.Rxe5+?
      • 1...Kd4
        • 2.Se6#
        • 2.Qxf4#
      • 1...dxe5!
    • 1.Qg2+?
      • 1...Rf3
        • 2.Qxf3#
      • 1...hxg2+!
    • 1.Qg3?
      • threat
        • 2.Bd3#
        • 2.Qxe3#
      • 1...Rf3
        • 2.Bd3#
        • 2.Bxf3#
        • 2.Qxf3#
      • 1...Sb2
        • 2.Sc3#
        • 2.Qxe3#
      • 1...Sac5
        • 2.Sc3#
        • 2.Qxe3#
      • 1...Sbc5
        • 2.Qxe3#
      • 1...Bxg3!
    • 1.Qg4?
      • threat
        • 2.Bd3#
        • 2.Bf3#
      • 1...Sb2
        • 2.Sc3#
        • 2.Bf3#
      • 1...Sac5
        • 2.Sc3#
        • 2.Bf3#
      • 1...Sbc5
        • 2.Bf3#
      • 1...Rxg4!
  • Keys
    • 1.Sf5!
      • 1...Rxf5
        • 2.Qxe3#
      • 1...Bxg5
        • 2.Sg3#
      • 1...Rf3
        • 2.Bd3#
      • 1...Rg4
        • 2.Qxg4#
      • 1...Bg3
        • 2.Sxg3#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sac5
        • 2.Sc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...Sa5
        • 2.Sxd6#
      • 1...Sbc5
        • 2.Sxd6#
      • 1...Sd8
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • R(f);SBLOCK::B(C)
    • R(f);OGATE::QAR1(G),XP(b)
    • S(d);N_GUARD::S(A)
    • S(d);N_GUARD::S(A),XS(d)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • P(h);OGATE,XR(F)::QAB1(G)
      • Refutation
        • K(e);P-FLIGHT,XR(F)
    • Try
      • R(F);CHECK,XP(h)
      • Refutation
        • P(i);XR(F)
    • Try
      • Q(G);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAB1(G),XR(f)
      • Refutation
        • P(c);CHECK,XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(j);::QAR1(G),XP(b)
      • Refutation
        • B(g);XQ(G)
    • Try
      • Q(G);P_PINR(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(j);::B(C)
      • Refutation
        • R(f);N_SPINR(f),XQ(G)
  • Actual
    • S(J);
    • Vars
      • R(f);OGATE,SBLOCK,XS(J)::QAR1(G),XP(b)
      • B(g);N_GUARD,XQ(G)::S(J)
      • R(f);SBLOCK::B(C)
      • R(f);OGATEB::QAR2(G),XR(f)
      • B(g);N_GUARD::S(J),XB(g)
      • S(d);N_GUARD::S(A)
      • S(d);N_GUARD::S(A),XS(d)
      • S(j);N_GUARD::S(J),XP(i)
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