MESON Chess Problem Database

Problem Display
PID: 253662 (4N1n1/1p3Q2/7p/2PBk2P/RB1b1N1K/3bpp2/1p6/2n5 w - - 0 1)

Doukhan, Gerard

Sachmatija, 2021

4N1n1/1p3Q2/7p/2PBk2P/RB1b1N1K/3bpp2/1p6/2n5

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Sg6#
    • 1...Be2
      • 2.Sg6#
    • 1...Bc4
      • 2.Sg6#
    • 1...Bb5
      • 2.Sg6#
    • 1...Bf5
      • 2.Qc7#
    • 1...Ba6
      • 2.Sg6#
    • 1...Bg6
      • 2.Sxg6#
    • 1...Bc3
      • 2.Bxc3#
    • 1...Sa2
      • 2.Sxd3#
    • 1...Se2
      • 2.Sxd3#
    • 1...Sb3
      • 2.Sxd3#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Se7
      • 2.Qf6#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Qe6#
        • 2.Qc7#
      • 1...Bf5+
        • 2.Qxf5#
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Bc3
        • 2.Bxc3#
      • 1...Se7
        • 2.Qe6#
        • 2.Qf6#
        • 2.Qxe7#
        • 2.Qg7#
      • 1...Bxc5!
    • 1.Ba5?
      • threat
        • 2.Bc7#
      • 1...Bxc5
        • 2.Qe6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...b6!
    • 1.c6?
      • threat
        • 2.Bd6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Bc5!
  • Keys
    • 1.Bc3!
      • threat
        • 2.Bxd4#
      • 1...Bxc3
        • 2.Qe6#
      • 1...Bf5
        • 2.Qc7#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Bc4
        • 2.Sg6#
      • 1...Se2
        • 2.Sxd3#
      • 1...Sb3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • B(c);N_GUARD::S(C)
    • B(c);SBLOCK::QAB(H)
    • B(c);N_GUARD::S(C),XB(c)
    • B(f);OGATEB::B(B),XB(f)
    • S(a);N_GUARD::S(C),XB(c)
    • S(j);N_GUARD::QAB1(H),XS(j)
    • S(j);N_GUARD::QAB1(H)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(c);CHECK,N_GUARD::QAR1(H),XB(c)
        • S(j);CHECK,N_GUARD::QAB1(H),XS(j)
        • B(f);OGATEB::B(B),XB(f)
      • Refutation
        • B(f);XP(E)
    • Try
      • B(B);
      • Threat
        • B(B)
      • Vars
        • B(f);XP(E)::QAR1(H)
        • S(j);N_GUARD::QAB1(H),XS(j)
      • Refutation
        • P(i);
    • Try
      • P(E);
      • Threat
        • B(B)
      • Vars
        • S(j);N_GUARD::QAB1(H),XS(j)
      • Refutation
        • B(f);
  • Actual
    • B(B);P_PINB(f)
    • Threat
      • B(B),XB(f)
    • Vars
      • B(f);N_SPINB(f),XB(B)::QAR1(H)
      • B(c);SBLOCK::QAB(H)
      • S(j);N_GUARD::QAB1(H),XS(j)
      • B(c);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XB(c)
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