MESON Chess Problem Database

Problem Display
PID: 168968 (4Qb2/8/2ppp2r/3k3p/rp1B3R/1P1Np3/3RN2K/3n3b w - - 0 1)

Gorbatenko, Yuri Grigorevich

SuperProblem, 2016

4Qb2/8/2ppp2r/3k3p/rp1B3R/1P1Np3/3RN2K/3n3b

#2

8 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sxb4#
    • 1...Ra2
      • 2.Sxb4#
    • 1...Ra3
      • 2.Sxb4#
    • 1...Ra5
      • 2.Sxb4#
    • 1...Ra6
      • 2.Sxb4#
    • 1...Ra7
      • 2.Sxb4#
    • 1...Ra8
      • 2.Sxb4#
    • 1...Be4
      • 2.Sdf4#
  • Tries
    • 1.Se5?
      • threat
        • 2.Qxc6#
      • 1...dxe5
        • 2.Bxe3#
      • 1...c5
        • 2.Qc6#
      • 1...Ra6!
    • 1.Ba7?
      • threat
        • 2.Rd4#
      • 1...Be4
        • 2.Sef4#
      • 1...c5
        • 2.Qa8#
      • 1...e5
        • 2.Sxb4#
      • 1...Bg7!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Rd4#
      • 1...Be4
        • 2.Sef4#
      • 1...c5
        • 2.Sxb4#
      • 1...e5
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(d);N_GUARD::S(E),XP(e)
    • B(b);SBLOCK::S(E)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(H),XP(h)
      • Vars
        • P(i);SBLOCK,XS(E)::R(A)+B(F),XP(c)
        • P(h);::QAB1(H)
      • Refutation
        • R(d);
    • Try
      • B(F);
      • Threat
        • R1(G)
      • Vars
        • B(b);SBLOCK::S(B)
        • P(h);OGATEB::QAB(H)
        • P(j);::R(A)+S(E),DCHECK,XP(e)
      • Refutation
        • B(l);
  • Actual
    • B(F);
    • Threat
      • R1(G)
    • Vars
      • B(b);SBLOCK::S(B)
      • P(h);SBLOCK::R(A)+S(E),DCHECK,XP(e)
      • P(j);OGATEB::QAB(H)
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