MESON Chess Problem Database

Problem Display
PID: 200043 (BQ1q4/2pP2n1/N1p1P3/K2k2p1/bp1P4/1P3N2/4R2B/4b3 w - - 0 1)

Etmishev, Eduard Artemevich

Suomen Shakki, 1990

BQ1q4/2pP2n1/N1p1P3/K2k2p1/bp1P4/1P3N2/4R2B/4b3

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sxc7#
    • 1...Qe7
      • 2.Sxc7#
    • 1...Qe8
      • 2.Sxc7#
    • 1...Qf8
      • 2.Sxc7#
    • 1...Qg8
      • 2.Sxc7#
    • 1...Qh8
      • 2.Sxc7#
    • 1...Bf2
      • 2.Sxb4#
    • 1...Bh4
      • 2.Sxb4#
    • 1...Bxb3
      • 2.Qb5#
    • 1...Bb5
      • 2.Qxb5#
  • Tries
    • 1.Rxe1?
      • threat
        • 2.Sxb4#
      • 1...Bxb3
        • 2.Qb5#
      • 1...Qe7
        • 2.Sxc7#
      • 1...Qf8
        • 2.Sxc7#
      • 1...Qxb8!
    • 1.Qa7?
      • threat
        • 2.Qc5#
      • 1...Qe7
        • 2.Sxc7#
      • 1...Qf8
        • 2.Sxc7#
      • 1...Sxe6!
    • 1.Qxc7?
      • threat
        • 2.Re5#
      • 1...Qxc7+
        • 2.Sxc7#
      • 1...Qf6
        • 2.Qd6#
      • 1...Bg3
        • 2.Sxb4#
      • 1...Bxb3!
  • Keys
    • 1.Qxb4!
      • threat
        • 2.Re5#
      • 1...Bxb4+
        • 2.Sxb4#
      • 1...Qf6
        • 2.Sxc7#
      • 1...Bg3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD::S(G),XP(g)
    • B(a);N_GUARD::S(G),XP(c)
    • B(b);N_GUARD,XP(C)::QAR2(K)
    • B(b);N_GUARD::QAR2(K),XB(b)
  • Tries
    • Try
      • R(A);XB(a)
      • Threat
        • S(G),XP(c)
      • Vars
        • B(b);N_GUARD,XP(C)::QAR2(K)
        • Q(i);N_GUARD::S(G),XP(g)
      • Refutation
        • Q(i);XQ(K)
    • Try
      • Q(K);
      • Threat
        • QAR1(K)
      • Vars
        • Q(i);N_GUARD::S(G),XP(g)
      • Refutation
        • S(h);XP(H)
    • Try
      • Q(K);P_SPINQ(K),XP(g)
      • Threat
        • R1(A)
      • Vars
        • Q(i);CHECK,XQ(K)::S(G),XQ(i)
        • Q(i);N_PINQ(K)::QAR1(K)
        • B(a);N_GUARD::S(G),XP(c)
      • Refutation
        • B(b);XP(C)
  • Actual
    • Q(K);P_SPINQ(K),XP(c)
    • Threat
      • R1(A)
    • Vars
      • B(a);CHECK,XQ(K)::S(G),XB(a)
      • Q(i);N_GUARD::S(G),XP(g)
      • B(a);N_PINQ(K)::QAR1(K)
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