MESON Chess Problem Database

Problem Display
PID: 63772 (2bBN1qr/2pp1p2/6pP/2Nppk2/B4rp1/6P1/4Q3/6K1 w - - 0 1)

Love, DS

Chess Amateur (The), 1909

2bBN1qr/2pp1p2/6pP/2Nppk2/B4rp1/6P1/4Q3/6K1

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Sxg7#
    • 1...Rf1+
      • 2.Qxf1#
    • 1...Rf2
      • 2.Qxf2#
    • 1...Ba6
      • 2.Bxd7#
    • 1...Bb7
      • 2.Bxd7#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Bc2+?
      • 1...Re4
        • 2.Qf1#
        • 2.Qf2#
      • 1...e4!
    • 1.Qd3+?
      • 1...e4
        • 2.Qxd5#
      • 1...Re4!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qf6#
      • 1...Rf1+
        • 2.Qxf1#
      • 1...Bxa6
        • 2.Bxd7#
      • 1...f6
        • 2.Qxf6#
      • 1...Qg7
        • 2.Sxg7#
      • 1...c6
        • 2.Sd6#
      • 1...d6
        • 2.Qxc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(k);N_GUARD::S(H),XQ(k)
    • R(a);CHECK,OGATEB::QAR(B),XR(a)
    • R(a);OGATEB::QAR(B),XR(a)
    • B(j);N_GUARD::B(D),XP(h)
    • P(g);N_GUARD::S(H)
  • Tries
    • Try
      • B(D);CHECK
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(B);CHECK
      • Vars
        • P(d);OGATEB,P_SPINP(d)::QAR2(B),XP(c)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • R(a);CHECK,OGATEB::QAR(B),XR(a)
      • B(j);N_GUARD,XQ(B)::B(D),XP(h)
      • P(i);::QAR1(B),XP(i)
      • Q(k);N_GUARD::S(H),XQ(k)
      • P(g);N_GUARD::S(H)
      • P(h);OGATEB::QAB(B),XB(j)
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