MESON Chess Problem Database

Problem Display
PID: 235080 (7b/2N2K2/pQ5P/3Pk1B1/2p1P1P1/3n3R/3p4/1B2R3 w - - 0 1)

Shanshin, Valery Yurevich

64 Shakhmatnoe obozrenie, 2010

7b/2N2K2/pQ5P/3Pk1B1/2p1P1P1/3n3R/3p4/1B2R3

#2

11 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qxf6#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Qd4#
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qe6#
        • 2.Qb8#
      • 1...dxe1Q
        • 2.Qd4#
        • 2.Qe6#
      • 1...dxe1S
        • 2.Qd4#
        • 2.Qe6#
      • 1...dxe1B
        • 2.Qd4#
        • 2.Qe6#
      • 1...dxe1R
        • 2.Qd4#
        • 2.Qe6#
      • 1...Sf4
        • 2.Qd4#
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Sc5
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...axb5!
    • 1.Bxd2?
      • threat
        • 2.Rh5#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Sf4
        • 2.Bc3#
      • 1...Sc5!
    • 1.Bf6+?
      • 1...Bxf6
        • 2.Qxf6#
      • 1...Kf4!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Bxd2#
      • 1...Sf4
        • 2.Bd4#
      • 1...Sc5
        • 2.Rh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::QAB1(H),XB(f)
  • Tries
    • Try
      • S(J);
      • Threat
        • DUALS(5)
      • Refutation
        • P(e);XS(J)
    • Try
      • B(G);XP(a)
      • Threat
        • R(C)
      • Vars
        • B(f);N_GUARD::QAB1(H),XB(f)
        • S(b);SBLOCK::B(G)
      • Refutation
        • S(b);
    • Try
      • B(G);CHECK
      • Vars
        • B(f);OGATE,XB(G)::QAB1(H),XB(f)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(G);
    • Threat
      • QAR1(H)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINS(b),XP(D)::R(B)+B(G),XP(a)
      • S(b);SBLOCK::B(G)
      • S(b);::R(C)
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