MESON Chess Problem Database

Problem Display
PID: 163431 (K1RN4/2P1p3/1Npkp3/8/p7/8/1p1B4/1rbQ4 w - - 0 1)

Fomichev, Evgeny Vasilevich

Gorbatenko, Yuri Grigorevich

idee & form, 1993

K1RN4/2P1p3/1Npkp3/8/p7/8/1p1B4/1rbQ4

#2

7 + 8

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Bf4#
    • 1...e5
      • 2.Bb4#
  • Tries
    • 1.Bc3+?
      • 1...Bd2
        • 2.Sb7#
      • 1...Kc5!
    • 1.Be3+?
      • 1...Bd2
        • 2.Sf7#
      • 1...Ke5!
    • 1.Qxa4?
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Qf4#
      • 1...c5
        • 2.Sf7#
      • 1...e5
        • 2.Qxc6#
      • 1...Ra1!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Qf4#
      • 1...c5
        • 2.Qxe6#
      • 1...e5
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAR(A)+B(B),DCHECK
    • P(g);SBLOCK::QAR(A)+B(B),DCHECK
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • B(b);P_SPINB(b)::S(G)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • B(b);P_SPINB(b)::S(G)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);XP(d)
      • Threat
        • QAR2(A)
      • Vars
        • K(f);S_FLIGHT::QAB1(A)
        • P(e);SBLOCK::S(G)
        • P(g);SBLOCK::QAR1(A),XP(e)
      • Refutation
        • R(a);P_PINQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(f);S_FLIGHT::QAB1(A)
      • P(e);SBLOCK::QAR1(A),XP(g)
      • P(g);SBLOCK::S(G)
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