MESON Chess Problem Database

Problem Display
PID: 237311 (1b6/5Q2/6p1/3ppNPb/2P1k2K/2R5/2P2PpB/1B1n4 w - - 0 1)

Shanshin, Valery Yurevich

Schweizerische Schachzeitung, 2015

1b6/5Q2/6p1/3ppNPb/2P1k2K/2R5/2P2PpB/1B1n4

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Re3#
    • 1...Sxf2
      • 2.Re3#
    • 1...Se3
      • 2.Rxe3#
    • 1...d4
      • 2.Sg3#
    • 1...gxf5
      • 2.Qxd5#
  • Tries
    • 1.Rh3?
      • threat
        • 2.c3#
      • 1...Sxf2
        • 2.Re3#
      • 1...Sb2
        • 2.Re3#
      • 1...Sc3
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
      • 1...d4
        • 2.Sg3#
      • 1...Be2!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Qxd5#
      • 1...Kxf3
        • 2.Sg3#
      • 1...Bxf3
        • 2.c3#
      • 1...dxc4
        • 2.Qb7#
      • 1...Sc3
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
      • 1...d4
        • 2.Sg3#
        • 2.Qd5#
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::R1(E)
    • S(a);N_GUARD,XP(C)::R1(E)
    • S(a);N_GUARD::R1(E),XS(a)
    • P(d);SBLOCK::S(H)
    • P(g);SBLOCK,XS(H)::QAB1(J),XP(d)
  • Tries
    • Try
      • R(E);
      • Threat
        • B(A)+P(B)
      • Vars
        • S(a);N_GUARD,XP(C)::R1(E)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD::R1(E),XS(a)
        • P(d);SBLOCK::S(H)
      • Refutation
        • B(f);
  • Actual
    • R(E);
    • Threat
      • QAB1(J),XP(d)
    • Vars
      • K(c);S_FLIGHT,XR(E)::QAR(J)+S(H)
      • B(f);SBLOCK,XR(E)::B(A)+P(B)
      • P(d);OGATEB,XP(F)::QAB(J)
      • S(a);N_GUARD::R1(E)
      • S(a);N_GUARD::R1(E),XS(a)
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