MESON Chess Problem Database

Problem Display
PID: 260894 (4K3/p1RNp3/k3rb2/1p6/2P5/1N2Pr2/5PB1/7Q w - - 0 1)

Fomichev, Evgeny Vasilevich

Neue Zurcher Zeitung, 2015

4K3/p1RNp3/k3rb2/1p6/2P5/1N2Pr2/5PB1/7Q

#2

9 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2
      • 2.Bb7#
    • 1...Rfxe3
      • 2.Bb7#
    • 1...Rg3
      • 2.Bb7#
    • 1...Rh3
      • 2.Bb7#
    • 1...Rf4
      • 2.Bb7#
    • 1...Rf5
      • 2.Bb7#
    • 1...Re5
      • 2.Qa1#
    • 1...Rb6
      • 2.Sdc5#
    • 1...Ba1
      • 2.Qxa1#
    • 1...Bh4
      • 2.Qa1#
    • 1...Bg5
      • 2.Qa1#
  • Tries
    • 1.Bf1?
      • threat
        • 2.cxb5#
      • 1...bxc4
        • 2.Bxc4#
      • 1...Rf5
        • 2.Qb7#
      • 1...Rb6
        • 2.Sdc5#
      • 1...b4
        • 2.c5#
      • 1...Re5!
    • 1.c5?
      • threat
        • 2.Sb8#
      • 1...b4
        • 2.Bf1#
        • 2.Qf1#
      • 1...Rb6!
  • Keys
    • 1.Qf1!
      • threat
        • 2.cxb5#
      • 1...bxc4
        • 2.Qxc4#
      • 1...Re5
        • 2.Qa1#
      • 1...Rf5
        • 2.Bb7#
      • 1...Rb6
        • 2.Sdc5#
      • 1...b4
        • 2.c5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(a);OGATE,XP(B)::B(C)
    • R(a);OGATE,XP(E)::B(C)
    • R(a);OGATE::B(C)
    • R(d);S_CUTB(e)::QAR(A)
    • R(d);SBLOCK::S(H)
    • B(e);N_GUARD::QAR(A),XB(e)
    • B(e);N_GUARD,SBLOCK::QAR(A)
    • B(e);N_GUARD::QAR(A)
  • Tries
    • Try
      • B(C);
      • Threat
        • P(F),XP(b)
      • Vars
        • P(b);OGATE,P_SPINP(b),XP(F)::B(C),XP(b)
        • R(a);OGATE::QAB1(A)
        • R(d);SBLOCK::S(H)
        • P(b);::B(C)+P(F)
      • Refutation
        • R(d);
    • Try
      • P(F);
      • Threat
        • S(H)
      • Refutation
        • R(d);
  • Actual
    • Q(A);
    • Threat
      • P(F),XP(b)
    • Vars
      • P(b);OGATE,P_SPINP(b),XP(F)::QAB(A),XP(b)
      • R(d);S_CUTB(e)::QAR(A)
      • R(a);OGATE::B(C)
      • R(d);SBLOCK::S(H)
      • P(b);::QAB(A)+P(F)
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