MESON Chess Problem Database

Problem Display
PID: 183064 (N1R1B3/RN1n1Q2/p1q2p2/rk2nP2/p1p1p3/P1P1P3/8/3K4 w - - 0 1)

Oudot, Jean

Probleemblad, 1956

N1R1B3/RN1n1Q2/p1q2p2/rk2nP2/p1p1p3/P1P1P3/8/3K4

#2

11 + 10

133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5+
      • 2.Qxd5#
    • 1...Qxb7
      • 2.Rxb7#
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qd6+
      • 2.Sxd6#
    • 1...Qe6
      • 2.Rc5#
    • 1...Sc5
      • 2.Sd6#
    • 1...Sb6
      • 2.Sc7#
    • 1...Sb8
      • 2.Qd5#
    • 1...Sf8
      • 2.Qd5#
  • Tries
    • 1.Qd5+?
      • 1...Qc5
        • 2.Sd6#
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Sc5
        • 2.Sd6#
        • 2.Qxc5#
      • 1...Qxd5+!
    • 1.Qxd7?
      • threat
        • 2.Qd5#
      • 1...Qxd7+
        • 2.Sd6#
      • 1...Sd3
        • 2.Qxc6#
      • 1...Sxd7!
  • Keys
    • 1.Qe6!
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Qd6+
        • 2.Sxd6#
      • 1...Qxb7
        • 2.Rxb7#
      • 1...Qxe6
        • 2.Rc5#
      • 1...Qxc8
        • 2.Qb6#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Qb6
        • 2.Qxb6#
      • 1...Qc7
        • 2.Sxc7#
      • 1...Sd3
        • 2.Qxc6#
      • 1...Sf3
        • 2.Qxc6#
      • 1...Sg4
        • 2.Qxc6#
      • 1...Sg6
        • 2.Qxc6#
      • 1...Sf7
        • 2.Qxc6#
      • 1...Sc5
        • 2.Sd6#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sb8
        • 2.Qd5#
      • 1...Sf8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • Q(h);CHECK,N_GUARD,P_SPINS(j)::QAR2(H),XQ(h)
    • Q(h);OGATE,P_SPINS(j),XS(G)::R(F),XQ(h)
    • Q(h);OGATE,P_SPINS(j)::R1(J),XQ(h)
    • Q(h);CHECK,N_GUARD,P_SPINS(j)::S(G),XQ(h)
    • Q(h);OGATE,P_SPINS(j)::R1(J)
    • S(j);P_SPINQ(h),SBLOCK::S(G)
    • S(j);P_SPINQ(h),SBLOCK::S(I)
    • S(j);N_GUARD,P_SPINQ(h)::QAR2(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • Q(h);CHECK,P_SPINS(j),XQ(H)
    • Try
      • Q(H);P_PINQ(h),XS(j)
      • Threat
        • QAR2(H)
      • Vars
        • Q(h);CHECK,XQ(H)::S(G)
        • S(f);N_GUARD::QAB1(H),XQ(h)
      • Refutation
        • S(f);N_SPINQ(h),XQ(H)
  • Actual
    • Q(H);
    • Vars
      • Q(h);CHECK,N_GUARD,P_SPINS(j)::QAR2(H),XQ(h)
      • Q(h);CHECK,N_GUARD,P_SPINS(j)::S(G),XQ(h)
      • Q(h);OGATE,P_SPINS(j),XS(G)::R(F),XQ(h)
      • Q(h);OGATE,P_SPINS(j),XQ(H)::R1(J)
      • Q(h);OGATE,P_SPINS(j),XR(J)::QAR1(H)
      • Q(h);OGATE,P_SPINS(j)::R1(J),XQ(h)
      • Q(h);OGATE,P_SPINS(j)::QAR1(H),XQ(h)
      • Q(h);N_GUARD,P_SPINS(j)::S(I),XQ(h)
      • S(f);N_GUARD::QAB1(H),XQ(h)
      • S(j);P_SPINQ(h),SBLOCK::S(G)
      • S(j);P_SPINQ(h),SBLOCK::S(I)
      • S(j);N_GUARD,P_SPINQ(h)::QAR2(H)
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