MESON Chess Problem Database

Problem Display
PID: 34710 (BB1b4/N2P1Q2/r2P3q/p1PNkPp1/R3p1P1/5np1/8/3K1R2 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

4th HM., Uralski Problemist, 2000

BB1b4/N2P1Q2/r2P3q/p1PNkPp1/R3p1P1/5np1/8/3K1R2

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Qe6#
    • 1...Qf8
      • 2.Qe6#
    • 1...Qh1
      • 2.Qe6#
    • 1...Qh2
      • 2.Qe6#
    • 1...Qh3
      • 2.Qe6#
    • 1...Qh4
      • 2.Qe6#
    • 1...Qh5
      • 2.Qe6#
    • 1...Qxd6
      • 2.Qe6#
    • 1...Qe6
      • 2.Qxe6#
    • 1...Qh7
      • 2.Qe6#
    • 1...Qh8
      • 2.Qe6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Rxd6
      • 2.Sc6#
    • 1...Bb6
      • 2.Sc6#
    • 1...Bf6
      • 2.Qe6#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Rxe4#
      • 1...Rxd6+
        • 2.Bxd6#
      • 1...Kf4
        • 2.Rxe4#
      • 1...Sd2
        • 2.Qe6#
      • 1...e3
        • 2.Re4#
        • 2.Qe6#
      • 1...Sd4!
    • 1.Qe8+?
      • 1...Qe6
        • 2.Qxe6#
      • 1...Be7!
    • 1.Qe7+?
      • 1...Qe6
        • 2.Qxe6#
      • 1...Bxe7!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Rxe4#
      • 1...Qxd6+
        • 2.Bxd6#
      • 1...Kf4
        • 2.Rxe4#
      • 1...Sd2
        • 2.Sc6#
      • 1...Sd4
        • 2.Sc4#
      • 1...e3
        • 2.Sc6#
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 14
  • Sets
    • Q(h);N_GUARD::QAR1(K)
    • Q(h);N_GUARD,P_PINR(B)::QAR1(K)
    • Q(h);N_GUARD,P_PINS(F),P_SPINQ(h),XP(H)::QAR1(K)
    • Q(h);N_GUARD::QAR1(K),XQ(h)
    • R(g);N_GUARD::S(I),XR(g)
    • R(g);N_GUARD,P_PINS(F),P_SPINR(g),XP(H)::S(I)
    • B(i);S_CUTR(g)::S(I)
    • B(i);S_CUTQ(h)::QAR1(K)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(C),XP(c)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XP(H)::B(M),XR(g)
        • K(e);P_SPINP(c),P_SPINS(a),S_FLIGHT::R1(C),XP(c)
        • S(a);::QAR1(K)
      • Refutation
        • S(a);
    • Try
      • Q(K);CHECK
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAR1(K),XQ(h)
      • Refutation
        • B(i);P_SPINB(i)
    • Try
      • Q(K);CHECK
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAR1(K),XQ(h)
      • Refutation
        • B(i);XQ(K)
  • Actual
    • S(F);
    • Threat
      • R1(C),XP(c)
    • Vars
      • Q(h);CHECK,OGATE,P_SPINQ(h),XP(H)::B(M),XQ(h)
      • K(e);P_SPINP(c),P_SPINS(a),S_FLIGHT::R1(C),XP(c)
      • S(a);::S(I)
      • S(a);SBLOCK::S(F)
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