MESON Chess Problem Database

Problem Display
PID: 150102 (2q2B2/Np2rR1B/1p6/1N1k4/3p4/1P1Q1P1p/8/6bK w - - 0 1)

Abramenko, Sergey Petrovich

SuperProblem 089. TT, 2013

2q2B2/Np2rR1B/1p6/1N1k4/3p4/1P1Q1P1p/8/6bK

#2

9 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qc4#
    • 1...Ke5
      • 2.Qe4#
    • 1...Ke6
      • 2.Qf5#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rc7
      • 2.Qe4#
    • 1...Rd7
      • 2.Qe4#
      • 2.Qf5#
    • 1...Rxf7
      • 2.Qe4#
  • Tries
    • 1.Qc4+?
      • 1...Ke5
        • 2.Bg7#
        • 2.f4#
      • 1...Qxc4!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Bxe7#
      • 1...Rxe4!
    • 1.Qxd4+?
      • 1...Ke6
        • 2.Rf6#
        • 2.Rxe7#
      • 1...Bxd4!
  • Keys
    • 1.Bg8!
      • threat
        • 2.Rf5#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Rxf7
        • 2.Qe4#
      • 1...Qf5
        • 2.Rxf5#
      • 1...Re5
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(d);N_SPINP(c),P-FLIGHT,P_SPINR(g)::QAR1(C)
    • K(d);N_SPINP(c),P-FLIGHT::QAR1(C)
    • K(d);N_SPINP(c),S_FLIGHT::QAB1(C)
    • R(g);N_GUARD::QAB1(C),XR(g)
    • R(g);N_GUARD::QAB1(C)
    • R(g);N_GUARD,XR(G)::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Refutation
        • Q(h);XQ(C)
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Vars
        • K(d);P-FLIGHT,P_SPINR(g)::B(I),XR(g)
      • Refutation
        • R(g);XQ(C)
    • Try
      • Q(C);CHECK,XP(c)
      • Refutation
        • B(a);XQ(C)
  • Actual
    • B(H);
    • Threat
      • B(H)+R(G),DCHECK
    • Vars
      • K(d);N_SPINP(c),P-FLIGHT,P_SPINR(g)::QAR1(C)
      • K(d);N_SPINP(c),P-FLIGHT::QAR1(C)
      • K(d);N_SPINP(c),S_FLIGHT::QAB1(C)
      • R(g);N_GUARD,P_SPINR(g),XR(G)::QAB1(C)
      • Q(h);::B(H)+R(G),DCHECK,XQ(h)
      • R(g);OGATE,SBLOCK::B(H)+R(G),DCHECK
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