MESON Chess Problem Database

Problem Display
PID: 267291 (2B4n/2K5/5p2/4pRp1/3BkNb1/1N1p2r1/6P1/7Q w - - 0 1)

Tyunin, Aleksandr Dmitrevich

Zadachi i Etyudi, 2012

2B4n/2K5/5p2/4pRp1/3BkNb1/1N1p2r1/6P1/7Q

#2

8 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • threat
        • 2.Sd2#
        • 2.Sc5#
        • 2.Qa8#
      • 1...Rxg2
        • 2.Qa8#
      • 1...exd4
        • 2.Qxd4#
      • 1...gxf4
        • 2.Qa8#
      • 1...d2
        • 2.Sxd2#
        • 2.Sc5#
        • 2.Qa8#
      • 1...Bxf5!
    • 1.Qe1+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Be2!
    • 1.Qh7?
      • threat
        • 2.Bb7#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...exd4
        • 2.Qe7#
      • 1...Sg6!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc6#
      • 1...Bxf5
        • 2.Bb7#
      • 1...exd4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);XP(B)::QAB(A)
        • P(e);OGATE,XB(D)::QAR1(A),XP(e)
        • P(f);XS(E)::QAB(A)
      • Refutation
        • B(d);XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(A),XR(b)
      • Refutation
        • B(d);P_SPINB(d)
    • Try
      • Q(A);
      • Threat
        • B(H)
      • Vars
        • B(d);OGATE,P_SPINB(d),XR(F)::QAB1(A),XB(d)
        • P(e);OGATEB,XB(D)::QAR(A)
      • Refutation
        • S(h);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • B(d);SBLOCK,XR(F)::B(H)
      • P(e);SBLOCK,XB(D)::S(C)
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