MESON Chess Problem Database

Problem Display
PID: 166645 (q2r1bB1/1PR1Nrpn/1R1nk1p1/3N1pp1/2P1b3/p6P/4Q2B/5K2 w - - 0 1)

Guida, Marco

5th HM., StrateGems, 2016

q2r1bB1/1PR1Nrpn/1R1nk1p1/3N1pp1/2P1b3/p6P/4Q2B/5K2

#2

11 + 13

145 StrateGems 2017
4901 Best Problems 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Rxd6#
    • 1...Rc8
      • 2.Rxd6#
    • 1...Re8
      • 2.Rxd6#
    • 1...Bxe7
      • 2.Rxe7#
    • 1...f4
      • 2.Qxe4#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd4#
      • 1...Sxc4
        • 2.Bxf7#
      • 1...f4!
    • 1.Sxg6?
      • threat
        • 2.Bxf7#
      • 1...f4
        • 2.Qxe4#
      • 1...Be7
        • 2.Rxe7#
      • 1...Rd7!
    • 1.Sc8?
      • threat
        • 2.Bxf7#
      • 1...f4
        • 2.Qxe4#
      • 1...Be7
        • 2.Rxe7#
      • 1...Rd7!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Qxe4#
      • 1...Kxf5
        • 2.Qg4#
      • 1...gxf5
        • 2.Bxf7#
      • 1...Sf6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(l);N_GUARD::R1(G),XS(e)
    • B(m);OGATE,XS(J)::R1(I),XB(m)
    • P(c);N_GUARD::QAR2(B),XB(b)
  • Tries
    • Try
      • S(J);N_PINS(e)
      • Threat
        • S(J)
      • Vars
        • S(e);N_GUARD,XP(E)::B(K),XR(h)
      • Refutation
        • P(c);
    • Try
      • S(J);XP(g)
      • Threat
        • B(K),XR(h)
      • Vars
        • P(c);N_GUARD::QAR2(B),XB(b)
        • B(m);N_GUARD::R1(I),XB(m)
      • Refutation
        • R(l);
    • Try
      • S(J);
      • Threat
        • B(K),XR(h)
      • Vars
        • P(c);N_GUARD::QAR2(B),XB(b)
        • B(m);N_GUARD::R1(I),XB(m)
      • Refutation
        • R(l);
  • Actual
    • S(J);P_SPINS(J),XP(c)
    • Threat
      • QAR2(B),XB(b)
    • Vars
      • K(f);N_SPINB(b),N_SPINR(h),N_SPINS(e),OGATEB,S_FLIGHT,XS(J)::QAB1(B)
      • P(g);SBLOCK,XS(J)::B(K),XR(h)
      • S(j);N_PINS(J)::S(J)
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