MESON Chess Problem Database

Problem Display
PID: 163856 (2Q2n2/1p3P1q/1PRp3r/KN1kB3/5P2/2p1RP2/b1p1P3/4b3 w - - 0 1)

Rossomakho, Yakov V

Shanshin, Valery Yurevich

3rd HM., Zadachi i Etyudi, 2014

2Q2n2/1p3P1q/1PRp3r/KN1kB3/5P2/2p1RP2/b1p1P3/4b3

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Rxd3#
    • 1...Qe4
      • 2.fxe4#
    • 1...Qg8
      • 2.Rd3#
    • 1...Qxf7
      • 2.Rd3#
    • 1...Qg7
      • 2.Rd3#
    • 1...Qh8
      • 2.Rd3#
    • 1...Rh1
      • 2.Rxd6#
    • 1...Rh2
      • 2.Rxd6#
    • 1...Rh3
      • 2.Rxd6#
    • 1...Rh4
      • 2.Rxd6#
    • 1...Rh5
      • 2.Rxd6#
    • 1...Rg6
      • 2.Rd3#
    • 1...Bf2
      • 2.Sxc3#
    • 1...Bg3
      • 2.Sxc3#
    • 1...Bh4
      • 2.Sxc3#
    • 1...Se6
      • 2.Rxd6#
    • 1...Sg6
      • 2.Rd3#
      • 2.Rxd6#
    • 1...dxe5
      • 2.Rxe5#
      • 2.Rc5#
  • Tries
    • 1.Rexc3?
      • threat
        • 2.Sc7#
      • 1...Bxc3+
        • 2.Sxc3#
      • 1...Qxf7
        • 2.e4#
      • 1...dxe5
        • 2.Rc5#
      • 1...Se6
        • 2.Rxd6#
      • 1...Bc4!
  • Keys
    • 1.Rcxc3!
      • threat
        • 2.Sc7#
      • 1...Bxc3+
        • 2.Sxc3#
      • 1...Qxf7
        • 2.Rd3#
      • 1...dxe5
        • 2.Rxe5#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Se6
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 14
  • Sets
    • Q(i);N_GUARD::R(B),XQ(i)
    • Q(i);OGATE::P(C),XQ(i)
    • Q(i);N_GUARD::R(B)
    • Q(i);N_GUARD,XP(J)::R(B)
    • R(g);N_GUARD::R1(I),XP(f)
    • R(g);S_CUTQ(i)::R(B)
    • B(a);N_GUARD::S(F),XP(d)
    • S(j);S_CUTR(g)::R1(I),XP(f)
  • Tries
    • Try
      • R(B);P_SPINR(B),XP(d)
      • Threat
        • S(F)
      • Vars
        • B(a);CHECK,XR(B)::S(F),XB(a)
        • Q(i);N_GUARD,XP(J)::P(A)
        • P(f);N_GUARD,XB(G)::R1(I)
        • S(j);S_CUTR(g)::R1(I),XP(f)
      • Refutation
        • B(b);
  • Actual
    • R(I);P_SPINR(I),XP(d)
    • Threat
      • S(F)
    • Vars
      • B(a);CHECK,XR(I)::S(F),XB(a)
      • Q(i);N_GUARD,XP(J)::R(B)
      • P(f);OGATE,XB(G)::R1(B),XP(f)
      • B(b);N_GUARD::QAB1(K),XB(b)
      • S(j);SBLOCK::QAB(K),XP(h)
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