MESON Chess Problem Database

Problem Display
PID: 169347 (7Q/8/1Rpp4/2pP2R1/2kP4/3p4/3B4/5K2 w - - 0 1)

Basisty, Mark Borisovich

Vasilenko, Anatoly Grigorovich

Comm., SuperProblem 170. TT, 2016

7Q/8/1Rpp4/2pP2R1/2kP4/3p4/3B4/5K2

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rg4?
      • 1...Kxd5
        • 2.Qg8#
      • 1...cxd4
        • 2.Qxd4#
      • 1...cxd5!
    • 1.Qh1?
      • 1...Kxd4
        • 2.Qh4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...cxd4!
    • 1.Qa8?
      • threat
        • 2.Qa4#
      • 1...cxd4
        • 2.Qxc6#
      • 1...Kxd4!
    • 1.Qe8?
      • 1...cxd4
        • 2.Qxc6#
      • 1...cxd5
        • 2.Qa4#
      • 1...Kxd4!
    • 1.dxc6?
      • 1...cxd4
        • 2.Rb4#
      • 1...d5!
  • Keys
    • 1.Qc8!
      • 1...Kxd4
        • 2.Qg4#
      • 1...cxd4
        • 2.Qxc6#
      • 1...cxd5
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(D)::QAB(G)
        • P(c);OGATE,P_SPINP(c),XP(C)::QAR1(G),XP(c)
      • Refutation
        • P(d);XP(D)
    • Try
      • Q(G);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR(G)
        • P(d);OGATE,XP(D)::QAB1(G),XP(d)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(G);
      • Threat
        • QAR2(G)
      • Vars
        • P(c);OGATEB,SBLOCK,XP(C)::QAR2(G),XP(d)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(G);
      • Vars
        • P(c);OGATEB,SBLOCK,XP(C)::QAR2(G),XP(d)
        • P(d);OGATE,XP(D)::QAR2(G)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • P(D);XP(d)
      • Vars
        • P(c);N_GUARD,XP(C)::R1(F)
      • Refutation
        • P(e);
  • Actual
    • Q(G);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::QAR(G)
      • P(c);OGATEB,P_SPINP(d),SBLOCK,XP(C)::QAR2(G),XP(d)
      • P(d);P_SPINP(c),XP(D)::R1(F)
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