MESON Chess Problem Database

Problem Display
PID: 235095 (3R1Nn1/5bK1/p2N3p/3pkP2/r3Pp2/6Q1/5B2/8 w - - 0 1)

Shanshin, Valery Yurevich

64 Shakhmatnoe obozrenie, 2017

3R1Nn1/5bK1/p2N3p/3pkP2/r3Pp2/6Q1/5B2/8

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Sg6#
    • 1...Bg6
      • 2.Sxg6#
  • Tries
    • 1.Kxf7?
      • threat
        • 2.Sg6#
      • 1...Se7
        • 2.Qg7#
      • 1...dxe4!
    • 1.Qc3+?
      • 1...Rd4
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...d4!
    • 1.Qd3?
      • threat
        • 2.Sxf7#
      • 1...dxe4
        • 2.Sd7#
      • 1...f3
        • 2.Bg3#
      • 1...Bh5
        • 2.Qxd5#
      • 1...Be6
        • 2.Sg6#
      • 1...Bg6
        • 2.Sxg6#
        • 2.Qxd5#
      • 1...Be8
        • 2.Qxd5#
      • 1...Rxe4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Sd7#
      • 1...Bxg6
        • 2.Sxg6#
      • 1...dxe4
        • 2.Sxf7#
      • 1...f3
        • 2.Qg3#
      • 1...Be6
        • 2.Qxe6#
      • 1...Be8
        • 2.Qe6#
      • 1...Sf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD::S(H)
    • B(g);N_GUARD::S(H),XB(g)
  • Tries
    • Try
      • K(F);P-FLIGHT,XB(g)
      • Threat
        • S(H)
      • Vars
        • S(h);N_GUARD::QAB(B)
      • Refutation
        • P(c);XP(C)
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(B);N_PINP(b)
      • Threat
        • S(E),XB(g)
      • Vars
        • P(c);XP(C)::S(H)
        • P(b);OGATEB::B(A)
        • B(g);N_GUARD::QAR1(B),XP(c)
        • B(g);N_GUARD::S(H)
      • Refutation
        • R(a);XP(C)
  • Actual
    • Q(B);N_PINP(b)
    • Threat
      • S(H)
    • Vars
      • B(g);XQ(B)::S(H),XB(g)
      • P(c);SBLOCK,XP(C)::S(E),XB(g)
      • P(b);OGATEB::QAB(B)
      • B(g);N_GUARD::QAR1(B),XB(g)
      • B(g);N_GUARD::QAR1(B)
      • S(h);N_GUARD::QAB1(B),XS(h)
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