MESON Chess Problem Database

Problem Display
PID: 244512 (3RRB1K/3P3B/1Np2pN1/2P1P3/1pPk2b1/b7/1n1P3n/1Q6 w - - 0 1)

Fomichev, Evgeny Vasilevich

Problemist Ukraini, 2013

3RRB1K/3P3B/1Np2pN1/2P1P3/1pPk2b1/b7/1n1P3n/1Q6

#2

13 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd7
      • 2.Rxd7#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qe4#
        • 2.Qg1#
      • 1...Sxc4
        • 2.Qd3#
        • 2.Qe4#
      • 1...Be6
        • 2.Qe4#
      • 1...Bd1
        • 2.Qe4#
      • 1...Bf3
        • 2.Qg1#
      • 1...Bf5
        • 2.Se2#
      • 1...Sd1
        • 2.Qd3#
        • 2.Qe4#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sf3
        • 2.Se2#
        • 2.Qe4#
      • 1...f5!
    • 1.Sh4?
      • threat
        • 2.Qe4#
        • 2.Qg1#
      • 1...Sxc4
        • 2.Qd3#
        • 2.Qe4#
      • 1...Be6
        • 2.Qe4#
      • 1...Bd1
        • 2.Sf5#
        • 2.Qe4#
      • 1...Bf3
        • 2.Sf5#
        • 2.Qg1#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Sd1
        • 2.Qd3#
        • 2.Qe4#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...f5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sxc6#
      • 1...Kxc5
        • 2.Qg1#
      • 1...Kxe5
        • 2.Qe4#
      • 1...Bf3
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);OGATE,P_SPINB(f),XP(H)::R(J),XB(f)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAR1(A)
        • B(f);::QAB(A)
        • B(f);N_GUARD::S(G)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(b);::QAR1(A)
      • Refutation
        • P(h);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAR1(A)
        • B(f);N_GUARD::S(G),XB(f)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(b);::QAR1(A)
      • Refutation
        • P(h);
  • Actual
    • S(G);
    • Threat
      • S(G),XP(g)
    • Vars
      • K(e);S_FLIGHT,XP(D)::QAB(A)
      • K(e);S_FLIGHT,XP(E)::QAR1(A)
      • B(f);N_GUARD::S(G)
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