MESON Chess Problem Database

Problem Display
PID: 156892 (8/4Q2B/1P2p3/4BpP1/4p3/3P1kpK/6R1/8 w - - 0 1)

Abdullayev, Elmar

Murashev, Pavel Aleksandrovich

Kudesnik, 2013

8/4Q2B/1P2p3/4BpP1/4p3/3P1kpK/6R1/8

#2

8 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qb7#
  • Tries
    • 1.Qb4?
      • 1...exd3
        • 2.Qf4#
      • 1...e3
        • 2.Qf4#
      • 1...f4
        • 2.Qxe4#
      • 1...Ke3!
    • 1.Qc5?
      • 1...e3
        • 2.Qc6#
      • 1...f4
        • 2.Bxe4#
      • 1...exd3!
    • 1.Qb7?
      • 1...f4
        • 2.Qxe4#
      • 1...Ke3!
    • 1.d4?
      • 1...Ke3
        • 2.Qa3#
      • 1...e3
        • 2.Qb7#
      • 1...f4!
  • Keys
    • 1.Qa3!
      • 1...Ke3
        • 2.d4#
      • 1...exd3
        • 2.Qxd3#
      • 1...e3
        • 2.Qa8#
      • 1...f4
        • 2.dxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::QAB(G)
  • Tries
    • Try
      • Q(G);
      • Vars
        • P(c);OGATE,XP(B)::QAR1(G)
        • P(c);OGATE::QAR1(G)
        • P(d);N_GUARD::QAB1(G),XP(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(G)
        • P(d);OGATE::B(H),XP(c)
      • Refutation
        • P(c);XP(B)
    • Try
      • Q(G);P_PINP(c)
      • Vars
        • P(d);N_GUARD::QAB1(G),XP(c)
      • Refutation
        • K(a);N_SPINP(c),P-FLIGHT
    • Try
      • P(B);
      • Vars
        • K(a);P-FLIGHT::QAR(G)
        • P(c);OGATEB,SBLOCK::QAB(G)
      • Refutation
        • P(d);
  • Actual
    • Q(G);
    • Vars
      • K(a);P-FLIGHT::QAR(G)+P(B)
      • P(c);OGATE,P_SPINP(c),XP(B)::QAR2(G),XP(c)
      • P(c);OGATEB,SBLOCK::QAB(G)
      • P(d);::QAR(G)+P(B),XP(c)
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