MESON Chess Problem Database

Problem Display
PID: 197095 (2n1R3/4B1p1/K2pqp2/3PkB2/3p2pp/p3N3/1p2N3/4Q3 w - - 0 1)

Guida, Marco

The Problemist, 2018

2n1R3/4B1p1/K2pqp2/3PkB2/3p2pp/p3N3/1p2N3/4Q3

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qc3#
    • 1...h3
      • 2.Qg3#
  • Tries
    • 1.Bxd6+?
      • 1...Sxd6
        • 2.Rxe6#
      • 1...Kxd6!
    • 1.Bxf6+?
      • 1...gxf6
        • 2.Rxe6#
      • 1...Kxf6!
    • 1.Qxh4?
      • threat
        • 2.Qg3#
      • 1...Qxf5
        • 2.Bxf6#
      • 1...g3
        • 2.Qxg3#
        • 2.Qxd4#
        • 2.Qe4#
        • 2.Qf4#
      • 1...dxe3!
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...Qxd5
        • 2.Sxg4#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...d3!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxd4#
      • 1...Qxd5
        • 2.Bxd6#
      • 1...dxe3
        • 2.Qe4#
      • 1...d3
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qe4#
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(c);OGATEB::QAB(A)
    • P(e);N_GUARD::QAB(A)
  • Tries
    • Try
      • B(G);CHECK,P_PINQ(h),P_SPINB(G),XP(g)
      • Vars
        • S(k);XB(G)::R1(H),XQ(h)
      • Refutation
        • K(f);N_SPINQ(h),S_FLIGHT,XB(G)
    • Try
      • B(G);CHECK,P_PINQ(h),XP(i)
      • Vars
        • P(j);XB(G)::R1(H),XQ(h)
      • Refutation
        • K(f);N_SPINQ(h),S_FLIGHT,XB(G)
    • Try
      • Q(A);XP(e)
      • Threat
        • QAB(A)
      • Vars
        • Q(h);XB(E)::R(H)+B(G),DCHECK,XP(i)
      • Refutation
        • P(c);XS(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • Q(h);SBLOCK,XP(D)::S(C),XP(d)
        • Q(h);OGATE,XB(E)::QAR1(A),XQ(h)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(c)
    • Vars
      • Q(h);XP(D)::R(H)+B(G),DCHECK,XP(g)
      • P(c);OGATE,XS(C)::QAR1(A)
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