MESON Chess Problem Database

Problem Display
PID: 180605 (5r2/1N5B/1ppPb1rn/1qp5/Rb2k1P1/Q2R1N2/2P3PB/5K2 w - - 0 1)

Servais, Albert

Bulletin Ouvrier des Echecs, 1952

5r2/1N5B/1ppPb1rn/1qp5/Rb2k1P1/Q2R1N2/2P3PB/5K2

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3+
      • 2.Qxd3#
    • 1...Rxf3+
      • 2.gxf3#
    • 1...Ra8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Rb8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Rc8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Rd8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Re8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Rg8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Rh8
      • 2.Sd2#
      • 2.Sg5#
    • 1...Bf5
      • 2.Sd2#
    • 1...Bf7
      • 2.Sd2#
      • 2.Sg5#
    • 1...Sf5
      • 2.Sd2#
    • 1...Sf7
      • 2.Sd2#
    • 1...c4
      • 2.Rd4#
  • Tries
    • 1.Bxg6+?
      • 1...Bf5
        • 2.Sd2#
        • 2.Sg5#
      • 1...Sf5
        • 2.Sd2#
        • 2.Sg5#
      • 1...Rf5!
    • 1.Qc3?
      • threat
        • 2.Qe1#
        • 2.Qe5#
      • 1...Qxd3+
        • 2.Qxd3#
      • 1...Rxf3+
        • 2.gxf3#
      • 1...Qxa4
        • 2.Qe5#
      • 1...Bxg4
        • 2.Qe5#
      • 1...Qc4
        • 2.Qe5#
      • 1...Rf5
        • 2.Qe1#
      • 1...Bc4
        • 2.Qe5#
      • 1...Sf5
        • 2.Sd2#
        • 2.Qe5#
      • 1...Sf7
        • 2.Sd2#
        • 2.Qe1#
      • 1...c4
        • 2.Rd4#
        • 2.Qd4#
      • 1...Sxg4!
  • Keys
    • 1.d7!
      • threat
        • 2.Sd6#
      • 1...Qxd3+
        • 2.Qxd3#
      • 1...Rxf3+
        • 2.gxf3#
      • 1...Bf5
        • 2.Sd2#
      • 1...Sf5
        • 2.Sd2#
      • 1...Sf7
        • 2.Sd2#
      • 1...c4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATE,XR(F)::QAB1(E),XQ(c)
    • R(j);CHECK,OGATE,XS(G)::P(C),XR(j)
    • B(g);N_PINS(G),N_SPINR(h)::S(G)
    • S(i);N_PINS(G),N_SPINR(h)::S(G)
    • S(i);N_PINS(G)::S(G)
    • P(d);N_PINR(F),N_SPINB(a)::R1(F)
  • Tries
    • Try
      • B(L);CHECK,XR(h)
      • Refutation
        • R(j);P_SPINR(j)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,OGATE,XR(F)::QAB1(E),XQ(c)
        • R(j);CHECK,OGATE,XS(G)::P(C),XR(j)
        • Q(c);N_PINR(F),N_SPINB(a),XR(H)::QAR1(E)
        • B(g);XP(I)::QAR1(E)
        • Q(c);N_SPINB(a)::QAR1(E)
        • R(j);N_SPINR(h)::QAR(E)
        • B(g);N_SPINB(a)::QAR1(E)
      • Refutation
        • S(i);XP(I)
  • Actual
    • P(J);
    • Threat
      • S(K)
    • Vars
      • Q(c);CHECK,OGATE,XR(F)::QAB1(E),XQ(c)
      • R(j);CHECK,OGATE,XS(G)::P(C),XR(j)
      • B(g);N_PINS(G),N_SPINR(h)::S(G)
      • S(i);N_PINS(G),N_SPINR(h)::S(G)
      • S(i);N_PINS(G)::S(G)
      • P(d);N_PINR(F),N_SPINB(a)::R1(F)
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