MESON Chess Problem Database

Problem Display
PID: 272667 (1n2Nqb1/br4p1/3pn1Q1/2pNk2r/2B1P2R/5p2/1p1R1K2/2B5 w - - 0 1)

Zappas, Byron

The Problemist, 1957

1n2Nqb1/br4p1/3pn1Q1/2pNk2r/2B1P2R/5p2/1p1R1K2/2B5

#2

9 + 13

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4?
      • threat
        • 2.Rd5#
      • 1...Sd4
        • 2.Sd3#
      • 1...Sf4
        • 2.Bxb2#
      • 1...Sg5
        • 2.Bxb2#
      • 1...Sc7
        • 2.Bxb2#
      • 1...Sd8
        • 2.Bxb2#
      • 1...d5
        • 2.Rxd5#
      • 1...cxb4+!
    • 1.Sb6?
      • threat
        • 2.Rd5#
      • 1...Sf4
        • 2.Bxb2#
      • 1...Sg5
        • 2.Bxb2#
      • 1...Sc7
        • 2.Bxb2#
      • 1...Sd8
        • 2.Bxb2#
      • 1...d5
        • 2.Rxd5#
      • 1...Sd4!
    • 1.Se7?
      • threat
        • 2.Rd5#
      • 1...Sd4
        • 2.Qxd6#
      • 1...Sg5
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qxd6#
      • 1...Sd8
        • 2.Qxd6#
      • 1...d5
        • 2.Rxd5#
      • 1...Sf4!
    • 1.Rxh5+?
      • 1...Qf5
        • 2.Qxf5#
      • 1...Sg5!
  • Keys
    • 1.Sdf6!
      • threat
        • 2.Rd5#
      • 1...Sd4
        • 2.Qg3#
      • 1...Sf4
        • 2.Sg4#
      • 1...Sg5
        • 2.Qf5#
      • 1...Sc7
        • 2.Qg3#
      • 1...Sd8
        • 2.Qg3#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(B)
      • Vars
        • S(g);SBLOCK::S(G)
        • S(g);N_GUARD::B(A),XP(a)
        • P(f);::R1(B),XP(f)
      • Refutation
        • P(c);CHECK,XS(G)
    • Try
      • S(G);
      • Threat
        • R1(B)
      • Vars
        • S(g);N_GUARD::B(A),XP(a)
        • P(f);::R1(B),XP(f)
      • Refutation
        • S(g);
    • Try
      • S(G);
      • Threat
        • R1(B)
      • Vars
        • S(g);OGATE::QAB1(H),XP(f)
        • P(f);::R1(B),XP(f)
      • Refutation
        • S(g);
    • Try
      • R(F);CHECK,XR(e)
      • Vars
        • Q(l);N_GUARD,P_SPINQ(l)::QAR1(H),XQ(l)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • S(G);
    • Threat
      • R1(B)
    • Vars
      • S(g);N_GUARD::QAB(H)
      • S(g);SBLOCK::S(G)
      • S(g);S_CUTR(e)::QAR1(H)
      • P(f);::R1(B),XP(f)
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