MESON Chess Problem Database

Problem Display
PID: 152517 (r6b/4N1Qp/6b1/n5p1/2P1k3/1p2PR1B/q2PK1PB/1N1n4 w - - 0 1)

Desanges, L

Hampstead and Highgate Express, 1898

(First published on Sat Nov 19 1898)

r6b/4N1Qp/6b1/n5p1/2P1k3/1p2PR1B/q2PK1PB/1N1n4

#2

11 + 10

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.d3#
    • 1...Qxd2+
      • 2.Sxd2#
    • 1...Qa3
      • 2.d3#
    • 1...Qa4
      • 2.d3#
    • 1...Bf5
      • 2.Bxf5#
    • 1...Bh5
      • 2.Bf5#
    • 1...Bf7
      • 2.Bf5#
    • 1...Be8
      • 2.Bf5#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sf2
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sxe3
      • 2.Sc3#
      • 2.Rxe3#
    • 1...b2
      • 2.d3#
    • 1...g4
      • 2.Rf4#
    • 1...h5
      • 2.Qxg6#
    • 1...h6
      • 2.Qxg6#
  • Tries
    • 1.Sxg6?
      • threat
        • 2.Bf5#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Sxe3
        • 2.Sc3#
        • 2.Rxe3#
      • 1...Sxc4
        • 2.Qb7#
      • 1...hxg6
        • 2.Qxg6#
      • 1...g4
        • 2.Rf4#
      • 1...Rf8!
    • 1.Be6?
      • threat
        • 2.Bd5#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Sxe3
        • 2.Sc3#
        • 2.Rxe3#
      • 1...Bf7
        • 2.Bf5#
      • 1...Rd8!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg3#
        • 2.Sd6#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Bxf5
        • 2.Bxf5#
      • 1...Bxg7
        • 2.Sd6#
      • 1...Sxc4
        • 2.Qb7#
      • 1...Qa3
        • 2.Sg3#
        • 2.d3#
      • 1...Ra6
        • 2.Sg3#
      • 1...Rd8
        • 2.Sg3#
      • 1...Sb7
        • 2.Sg3#
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(b);N_PINP(B)::P(B)
    • Q(b);CHECK,XP(B)::S(A),XQ(b)
    • B(g);N_GUARD::B(H),XB(g)
    • B(g);N_GUARD,P_PINR(G)::B(H)
    • B(g);N_GUARD::B(H)
    • S(a);N_GUARD,N_PINP(B)::S(A)
    • S(a);N_GUARD::S(A)
    • S(a);CHECK,N_GUARD::S(A),XS(a)
    • P(c);N_PINP(B)::P(B)
    • P(f);N_GUARD::R1(G)
    • P(h);N_GUARD::QAB(K),XB(g)
  • Tries
    • Try
      • S(J);XB(g)
      • Threat
        • B(H)
      • Vars
        • Q(b);CHECK,XP(B)::S(A),XQ(b)
        • S(a);CHECK,N_GUARD::S(A),XS(a)
        • S(e);N_GUARD,XP(I)::QAB(K)
        • P(h);OGATE,XS(J)::QAB(K),XP(h)
        • P(f);N_GUARD::R1(G)
      • Refutation
        • R(i);
    • Try
      • B(H);
      • Threat
        • B(H)
      • Vars
        • Q(b);CHECK,XP(B)::S(A),XQ(b)
        • S(a);CHECK,N_GUARD::S(A),XS(a)
        • B(g);N_GUARD::B(H)
      • Refutation
        • R(i);
  • Actual
    • S(J);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);CHECK,XP(B)::S(A),XQ(b)
      • S(a);CHECK,N_GUARD::S(A),XS(a)
      • B(g);OGATE,XS(J)::B(H),XB(g)
      • B(j);XQ(K)::S(J)
      • S(e);N_GUARD,XP(I)::QAB(K)
      • R(i);::S(J)
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