MESON Chess Problem Database

Problem Display
PID: 231710 (2r3N1/R1p2p2/5Rr1/4k1p1/4P2B/1nP1QP2/1KB1pq2/2n1N3 w - - 0 1)

Desanges, L

The Field, 1899

(First published on Sat Jan 28 1899)

2r3N1/R1p2p2/5Rr1/4k1p1/4P2B/1nP1QP2/1KB1pq2/2n1N3

#2

11 + 10

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Bxg3#
    • 1...Qf1
      • 2.Bg3#
    • 1...Qxf3
      • 2.Sxf3#
    • 1...Rh6
      • 2.Qxg5#
    • 1...Sa2
      • 2.Sd3#
    • 1...Sd3+
      • 2.Sxd3#
    • 1...Sd4
      • 2.cxd4#
    • 1...gxh4
      • 2.Qf4#
    • 1...g4
      • 2.Qf4#
    • 1...c5
      • 2.Re7#
    • 1...c6
      • 2.Re7#
  • Tries
    • 1.Qd4+?
      • 1...Qxd4
        • 2.Bg3#
      • 1...Sxd4!
    • 1.Qc5+?
      • 1...Qxc5
        • 2.Bg3#
      • 1...Sxc5!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Rf5#
      • 1...Sd3+
        • 2.Sxd3#
      • 1...Qxb6
        • 2.Bg3#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...Rxf6
        • 2.Qxf6#
      • 1...cxb6
        • 2.Re7#
      • 1...Sd4
        • 2.Qc5#
      • 1...c6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::B(H),XQ(c)
    • Q(c);N_GUARD::B(H)
    • Q(c);XP(F)::S(A),XQ(c)
    • R(g);N_GUARD::QAR2(E),XP(f)
    • S(a);N_GUARD::S(A)
    • S(a);CHECK,N_GUARD::S(A),XS(a)
    • S(d);OGATE::P(D),XS(d)
    • P(f);N_GUARD,XB(H)::QAB1(E)
    • P(f);N_GUARD::QAB1(E)
    • P(h);OGATE::R(J)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • Q(c);P_PINP(D),XQ(E)::B(H)
      • Refutation
        • S(d);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • Q(c);XQ(E)::B(H)
      • Refutation
        • S(d);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • R1(I)
    • Vars
      • S(a);CHECK,N_GUARD::S(A),XS(a)
      • Q(c);N_GUARD,XQ(E)::B(H)
      • Q(c);XP(F)::S(A),XQ(c)
      • R(g);OGATE,XR(I)::QAB1(E),XR(g)
      • P(h);OGATE,XQ(E)::R(J)
      • S(d);N_GUARD,S_CUTQ(c)::QAR2(E)
      • P(h);OGATE::R(J)
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