MESON Chess Problem Database

Problem Display
PID: 247191 (1BQ5/5p2/2pPbR2/n2k3r/5P2/1P2P1Np/2R1PPn1/1K1N3B w - - 0 1)

Doukhan, Gerard

Variantim, 2021

1BQ5/5p2/2pPbR2/n2k3r/5P2/1P2P1Np/2R1PPn1/1K1N3B

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb3
      • 2.Qxc6#
    • 1...Sb7
      • 2.Qxc6#
    • 1...h2
      • 2.Bxg2#
    • 1...c5
      • 2.Sc3#
      • 2.Rd2#
      • 2.Rxc5#
      • 2.Qxc5#
  • Tries
    • 1.Ba7?
      • threat
        • 2.Rd2#
      • 1...Kxd6
        • 2.Qd8#
      • 1...Sxb3
        • 2.Qxc6#
      • 1...Bf5
        • 2.Sc3#
      • 1...Sc4!
    • 1.Qa6?
      • threat
        • 2.Qd3#
      • 1...Sxb3
        • 2.Qc4#
        • 2.Qxc6#
      • 1...Sc4
        • 2.Qxc4#
      • 1...c5
        • 2.Sc3#
        • 2.Rd2#
      • 1...Bf5!
    • 1.b4?
      • threat
        • 2.Rc5#
      • 1...Sb3
        • 2.Qxc6#
      • 1...Sc4
        • 2.Sc3#
      • 1...Sb7
        • 2.Qxc6#
      • 1...c5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Bf5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sdc3#
      • 1...Kxe4
        • 2.Sc3#
      • 1...Sxe3
        • 2.Rd2#
      • 1...Sxf4
        • 2.Rc5#
      • 1...Sxb3
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(c);N_GUARD,XP(G)::QAB1(N),XP(f)
    • S(c);N_GUARD::QAB1(N),XP(f)
    • P(b);N_GUARD::B(C),XS(a)
  • Tries
    • Try
      • B(M);
      • Threat
        • R(D)
      • Vars
        • K(d);N_SPINS(a),OGATEB,P-FLIGHT,P_SPINB(g),XP(K)::QAR2(N)
        • S(c);N_GUARD,XP(G)::QAB1(N),XP(f)
        • B(g);P_PINR(D)::S(B)
      • Refutation
        • S(c);
    • Try
      • Q(N);
      • Threat
        • QAR2(N)
      • Vars
        • S(c);N_GUARD::QAB1(N),XS(c)
      • Refutation
        • B(g);P_PINR(D)
    • Try
      • P(G);
      • Threat
        • R1(D)
      • Vars
        • S(c);N_GUARD::QAB1(N),XP(f)
        • S(c);SBLOCK::S(B)
      • Refutation
        • B(g);P_PINR(D)
  • Actual
    • S(I);N_PINS(a)
    • Threat
      • S(B)
    • Vars
      • K(d);P_SPINS(a),S_FLIGHT,XS(I)::S(B)
      • S(a);XP(H)::R(D)
      • S(a);XP(J)::R1(D)
      • S(c);N_GUARD,XP(G)::QAB1(N),XP(f)
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