MESON Chess Problem Database

Problem Display
PID: 59492 (2n1qB2/2NN4/3pp3/2pQ1p1r/5kBP/2R2P2/K6P/2b2b2 w - - 0 1)

Casa, Alex

The Problemist Supplement, 2005

2n1qB2/2NN4/3pp3/2pQ1p1r/5kBP/2R2P2/K6P/2b2b2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.Sxe6#
    • 1...Qxf8
      • 2.Sxe6#
    • 1...Rh6
      • 2.Bxh6#
    • 1...Bb2
      • 2.Qd2#
    • 1...Bd2
      • 2.Qxd2#
    • 1...Ba3
      • 2.Qd2#
    • 1...Bg2
      • 2.Qc4#
    • 1...Bh3
      • 2.Qc4#
    • 1...Bc4+
      • 2.Qxc4#
    • 1...Se7
      • 2.Sxe6#
    • 1...c4
      • 2.Qd4#
    • 1...fxg4
      • 2.Qe4#
    • 1...exd5
      • 2.Sxd5#
  • Tries
    • 1.Bxd6+?
      • 1...Sxd6
        • 2.Qe5#
      • 1...e5!
    • 1.Bh6+?
      • 1...Rg5
        • 2.Bxg5#
      • 1...Rxh6!
    • 1.Qxf5+?
      • 1...exf5
        • 2.Sd5#
      • 1...Rxf5!
    • 1.Qxd6+?
      • 1...e5
        • 2.Sd5#
      • 1...Sxd6!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Sd5#
      • 1...Qxe6+
        • 2.Sxe6#
      • 1...Bc4+
        • 2.Rxc4#
      • 1...Rxh4
        • 2.Qxf5#
      • 1...fxg4
        • 2.Qxg4#
      • 1...Sb6
        • 2.Bxd6#
      • 1...Se7
        • 2.Qxd6#
      • 1...d5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(j);N_GUARD::S(H),XP(h)
    • Q(j);N_GUARD,XB(J)::S(H),XP(h)
    • R(f);N_GUARD::B(J),XR(f)
    • B(a);N_GUARD::QAB(G)
    • B(a);N_GUARD::QAB(G),XB(a)
    • B(b);N_GUARD::QAR(G)
    • B(b);CHECK,N_GUARD::QAR(G),XB(b)
    • S(i);S_CUTQ(j)::S(H),XP(h)
    • P(d);N_GUARD::QAR2(G)
    • P(e);N_GUARD,XB(E)::QAR1(G)
    • P(h);XQ(G)::S(H),XP(h)
  • Tries
    • Try
      • B(J);CHECK,XP(g)
      • Vars
        • S(i);XB(J)::QAB1(G)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • B(J);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::B(J),XR(f)
      • Refutation
        • R(f);XB(J)
    • Try
      • Q(G);CHECK,XP(e)
      • Vars
        • P(h);XQ(G)::S(H)
      • Refutation
        • R(f);XQ(G)
    • Try
      • Q(G);CHECK,XP(g)
      • Vars
        • P(h);P_SPINP(h)::S(H)
      • Refutation
        • S(i);XQ(G)
  • Actual
    • Q(G);XP(h)
    • Threat
      • S(H)
    • Vars
      • Q(j);CHECK,XQ(G)::S(H),XQ(j)
      • B(b);CHECK,N_GUARD::R(C),XB(b)
      • R(f);N_GUARD,XP(F)::QAR1(G),XP(e)
      • P(e);OGATE,XB(E)::QAR1(G),XP(e)
      • S(i);N_GUARD::B(J),XP(g)
      • S(i);N_GUARD,S_CUTQ(j)::QAB(G),XP(g)
      • P(g);::S(H),XP(g)
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