MESON Chess Problem Database

Problem Display
PID: 168948 (2Nk4/N1ppp1b1/2P1Pp2/3P3B/3Q4/8/6R1/1K5b w - - 0 1)

Kapustin, Fedor Mikhailovich

6th HM., SuperProblem, 2015

2Nk4/N1ppp1b1/2P1Pp2/3P3B/3Q4/8/6R1/1K5b

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bh8
      • 2.Rg8#
    • 1...dxc6
      • 2.dxc6#
    • 1...dxe6
      • 2.dxe6#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sb7#
      • 1...cxd6
        • 2.Qb6#
      • 1...exd6!
    • 1.d6?
      • threat
        • 2.dxe7#
      • 1...cxd6
        • 2.Qb6#
      • 1...exd6
        • 2.e7#
      • 1...Bf8!
    • 1.cxd7?
      • threat
        • 2.Sc6#
      • 1...c6
        • 2.Qb6#
      • 1...c5!
  • Keys
    • 1.Qxf6!
      • threat
        • 2.Qxe7#
      • 1...Bxf6
        • 2.Rg8#
      • 1...exf6
        • 2.e7#
      • 1...Bf8
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(f);OGATE::R(B)
    • P(d);OGATE,XP(F)::QAR(C)+P(D),XP(d)
    • P(d);OGATE,XP(G)::QAR(C)+P(D),XP(d)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • P(c);OGATEB,XS(I)::QAB(C)
      • Refutation
        • P(e);XS(I)
    • Try
      • P(D);
      • Threat
        • P(D),XP(e)
      • Vars
        • P(c);OGATEB,XP(D)::QAB(C)
        • P(e);OGATE,XP(D)::P(G)
      • Refutation
        • B(f);
    • Try
      • P(F);XP(d)
      • Threat
        • S(H)
      • Vars
        • P(c);OGATEB::QAB(C)
      • Refutation
        • P(c);
  • Actual
    • Q(C);P_PINP(e),XP(b)
    • Threat
      • QAB1(C),XP(e)
    • Vars
      • B(f);N_SPINP(e),OGATE,XQ(C)::R(B)
      • P(e);N_SPINP(e),OGATE,XQ(C)::P(G)
      • B(f);N_GUARD::QAR2(C),XB(f)
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