MESON Chess Problem Database

Problem Display
PID: 272119 (8/4pqN1/4B3/3b1pR1/1p3k1K/2BppP2/2p5/2Q2R2 w - - 0 1)

Juricek, Stanislav

Shakhmatnaya kompozitsiya, 2021

8/4pqN1/4B3/3b1pR1/1p3k1K/2BppP2/2p5/2Q2R2

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5+
      • 2.Sxh5#
    • 1...Qxe6
      • 2.Sh5#
    • 1...Qe8
      • 2.Rxf5#
    • 1...Qg8
      • 2.Sh5#
      • 2.Rxf5#
    • 1...Qf6
      • 2.Sh5#
    • 1...Qxg7
      • 2.Rxf5#
    • 1...Qf8
      • 2.Sh5#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qxe3#
      • 1...Qh5+
        • 2.Sxh5#
      • 1...Qxe6
        • 2.Sh5#
      • 1...d2!
    • 1.Bxf7?
      • threat
        • 2.Sh5#
        • 2.Rxf5#
      • 1...Bxf7
        • 2.Rxf5#
      • 1...bxc3
        • 2.Rxf5#
      • 1...Be4
        • 2.Sh5#
        • 2.Se6#
      • 1...Be6
        • 2.Sh5#
        • 2.Sxe6#
      • 1...e6
        • 2.Sh5#
      • 1...Bxf3!
    • 1.Qe1?
      • threat
        • 2.Qg3#
      • 1...Qh5+
        • 2.Sxh5#
      • 1...e2
        • 2.Qd2#
      • 1...Bxf3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Be5#
      • 1...Qh5+
        • 2.Sxh5#
      • 1...Qxe6
        • 2.Sh5#
      • 1...Qxg7
        • 2.Rxf5#
      • 1...Bxf3
        • 2.Qxb4#
      • 1...bxc3
        • 2.Qb8#
      • 1...e2
        • 2.Bd2#
      • 1...Qf6
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(i);CHECK,N_GUARD::S(H),XQ(i)
    • Q(i);N_GUARD,XB(G)::S(H)
    • Q(i);N_GUARD::R1(F),XP(g)
    • Q(i);N_GUARD,P_PINR(F)::S(H)
    • Q(i);N_GUARD,XS(H)::R1(F),XP(g)
    • Q(i);N_GUARD::S(H)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • Q(i);CHECK,N_GUARD::S(H),XQ(i)
        • Q(i);N_GUARD,XB(G)::S(H)
      • Refutation
        • P(b);N_SPINP(c)
    • Try
      • B(G);XQ(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XB(G)::R1(F),XP(g)
        • P(d);XB(C)::R1(F),XP(g)
        • P(h);::S(H)
      • Refutation
        • B(f);P_SPINB(f),XP(D)
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • QAB1(A)
      • Vars
        • Q(i);CHECK,N_GUARD::S(H),XQ(i)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • B(f);P_SPINB(f),XP(D)
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • B(C)
    • Vars
      • Q(i);CHECK,N_GUARD::S(H),XQ(i)
      • Q(i);N_GUARD,XB(G)::S(H)
      • Q(i);N_GUARD,XS(H)::R1(F),XP(g)
      • B(f);N_GUARD,P_SPINB(f),XP(D)::QAR(A),XP(d)
      • P(d);OGATE,XB(C)::QAB(A)
      • P(c);OGATEB::B(C)
      • Q(i);N_GUARD,P_PINR(F)::S(H)
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