MESON Chess Problem Database

Problem Display
PID: 137877 (4n3/p2N4/P3p1K1/Qn1RP3/2p1kp2/1pP2p2/1P3P2/8 w - - 0 1)

Fomichev, Evgeny Vasilevich

Aleksandr Galitzky - Shakhmaty Geine (Vol 1), 2010

4n3/p2N4/P3p1K1/Qn1RP3/2p1kp2/1pP2p2/1P3P2/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sbd6
      • 2.Rd4#
    • 1...Sbc7
      • 2.Rd4#
    • 1...Sed6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sec7
      • 2.Sf6#
    • 1...Sg7
      • 2.Sf6#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Sc5#
      • 1...Kxd5
        • 2.Qa8#
      • 1...Sed6
        • 2.Sf6#
      • 1...Sbd6
        • 2.Rd4#
      • 1...exd5!
    • 1.Qxb5?
      • threat
        • 2.Rd4#
        • 2.Qxc4#
      • 1...Sd6
        • 2.Sf6#
        • 2.Rd4#
      • 1...exd5!
  • Keys
    • 1.Qc7!
      • 1...Kxd5
        • 2.Qb7#
      • 1...Sxc3
        • 2.Qxc4#
      • 1...Sbxc7
        • 2.Rd4#
      • 1...Sexc7
        • 2.Sf6#
      • 1...exd5
        • 2.Sc5#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sed6
        • 2.Sf6#
      • 1...Sa3
        • 2.Rd4#
      • 1...Sbd6
        • 2.Rd4#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sg7
        • 2.Sf6#

This is a version of 137876

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R1(E)
    • S(f);N_GUARD::R1(E),XS(f)
    • S(i);N_GUARD::S(I)
    • S(i);N_GUARD::S(I),XS(i)
  • Tries
    • Try
      • Q(D);
      • Threat
        • S(I)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(E)::QAB(D)
        • S(i);N_GUARD::S(I)
        • S(f);N_GUARD::R1(E)
      • Refutation
        • P(g);XR(E)
    • Try
      • Q(D);XS(f)
      • Threat
        • DUALS(2)
      • Refutation
        • P(g);XR(E)
  • Actual
    • Q(D);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(E)::QAB(D)
      • S(f);N_GUARD,XP(C)::QAR2(D),XP(c)
      • S(f);N_GUARD,XQ(D)::R1(E)
      • S(i);N_GUARD,XQ(D)::S(I)
      • P(g);SBLOCK,XR(E)::S(I)
      • S(f);N_GUARD::R1(E),XS(f)
      • S(i);N_GUARD::S(I)
      • S(f);N_GUARD::R1(E)
      • S(i);N_GUARD::S(I),XS(i)
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