MESON Chess Problem Database

Problem Display
PID: 76350 (1Q2R3/1B6/4q3/5p2/2PNp3/4kP2/2P1N1n1/4BnK1 w - - 0 1)

Degener, Udo

Troll, 2007

1Q2R3/1B6/4q3/5p2/2PNp3/4kP2/2P1N1n1/4BnK1

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Bf2#
    • 1...Sxe1
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...exf3
      • 2.Rxe6#
  • Tries
    • 1.Bd5?
      • threat
        • 2.Qb3#
      • 1...Sxe1
        • 2.Qf4#
      • 1...Sd2
        • 2.Bf2#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Qb6!
    • 1.Bc6?
      • threat
        • 2.Qb3#
      • 1...Sxe1
        • 2.Qf4#
      • 1...Sd2
        • 2.Bf2#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Qxc4!
    • 1.Qg3?
      • threat
        • 2.Qf2#
      • 1...Sxe1
        • 2.Qf4#
      • 1...Sxg3!
  • Keys
    • 1.Bxe4!
      • threat
        • 2.Qb3#
      • 1...Qxc4
        • 2.Bd5#
      • 1...Sxe1
        • 2.Qf4#
      • 1...Qb6
        • 2.Bc6#
      • 1...Sd2
        • 2.Bf2#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::B(A)
    • S(b);N_GUARD,XB(A)::QAB1(I)
    • S(b);N_GUARD::QAB1(I),XS(b)
    • S(b);N_GUARD::QAB1(I)
    • P(d);OGATEB,P_SPINQ(f),XP(E)::R(J),XQ(f)
  • Tries
    • Try
      • B(H);
      • Threat
        • QAR(I)
      • Vars
        • S(b);N_GUARD,XB(A)::QAB1(I)
        • S(a);SBLOCK::B(A)
        • S(b);N_GUARD::QAB1(I),XS(b)
      • Refutation
        • Q(f);P_SPINP(d)
    • Try
      • B(H);
      • Threat
        • QAR(I)
      • Vars
        • S(b);N_GUARD,XB(A)::QAB1(I)
        • S(a);SBLOCK::B(A)
        • S(b);N_GUARD::QAB1(I),XS(b)
      • Refutation
        • Q(f);P_SPINP(d),XP(F)
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • S(b);N_GUARD,XB(A)::QAB1(I)
      • Refutation
        • S(a);XQ(I)
  • Actual
    • B(H);XP(d)
    • Threat
      • QAR(I)
    • Vars
      • Q(f);OGATEB,XP(F)::R(J)+B(H)
      • S(b);N_GUARD,XB(A)::QAB1(I)
      • Q(f);OGATEB::R(J)+B(H)
      • S(a);SBLOCK::B(A)
      • S(b);N_GUARD::QAB1(I),XS(b)
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