MESON Chess Problem Database

Problem Display
PID: 240543 (2KN1Qbb/B1nR4/2R1P1p1/r1n1k3/4ppB1/2P5/q2N4/5r2 w - - 0 1)

Han, Israel

Variantim, 2012

2KN1Qbb/B1nR4/2R1P1p1/r1n1k3/4ppB1/2P5/q2N4/5r2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sc4#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qa1
      • 2.Sc4#
    • 1...Qb2
      • 2.Sc4#
    • 1...Qc2
      • 2.Sc4#
    • 1...Qa3
      • 2.Sc4#
    • 1...Bxe6
      • 2.Qxh8#
    • 1...Bf7
      • 2.Qxh8#
    • 1...Bh7
      • 2.Qxh8#
    • 1...Bf6
      • 2.Qd6#
    • 1...Bg7
      • 2.Qxg7#
    • 1...Sb3
      • 2.Sc4#
    • 1...Sd3
      • 2.Bd4#
    • 1...Sa4
      • 2.Bd4#
    • 1...S5a6
      • 2.Bd4#
    • 1...Sb7
      • 2.Bd4#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Sf7+?
      • 1...Bxf7
        • 2.Qxh8#
      • 1...Kf6!
    • 1.Rxc5+?
      • 1...Qd5
        • 2.Sc4#
        • 2.Sc6#
      • 1...Sd5
        • 2.Sc6#
        • 2.Bb8#
      • 1...Rxc5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qg5#
      • 1...Qxe6
        • 2.Sc4#
      • 1...Bxe6
        • 2.Sf7#
      • 1...S5xe6
        • 2.Bd4#
      • 1...S7xe6
        • 2.Bb8#
      • 1...Bf6
        • 2.Qd6#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 14
  • Sets
    • Q(b);N_GUARD::S(A)
    • Q(b);N_GUARD::S(A),XQ(b)
    • B(j);OGATE,P_PINR(G),XP(E)::QAB(J),XB(k)
    • B(j);OGATE::QAB(J),XB(k)
    • B(k);SBLOCK::QAB1(J)
    • B(k);N_GUARD::QAB(J),XB(k)
    • S(f);S_CUTQ(b)::S(A)
    • S(f);OGATE::B(F)
    • P(h);N_GUARD::QAR1(J)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • B(j);OGATE,XS(I)::QAB(J),XB(k)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • R(D);CHECK,XS(f)
      • Refutation
        • R(e);XR(D)
  • Actual
    • Q(J);
    • Threat
      • QAR2(J)
    • Vars
      • Q(b);N_GUARD,P_PINR(G),P_SPINQ(b),XP(E)::S(A)
      • B(j);N_GUARD,P_PINR(G),P_SPINB(j),XP(E)::S(I)
      • S(f);OGATE,P_SPINS(f),XP(E)::B(F)
      • S(i);OGATEB,P_SPINS(i),XP(E)::B(F)
      • B(k);SBLOCK::QAB1(J)
      • P(h);::QAR2(J),XP(h)
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