MESON Chess Problem Database

Problem Display
PID: 207862 (1B5b/2QNp3/1p1rkP1N/6P1/3p4/2P5/b5B1/2K5 w - - 0 1)

Basisty, Mark Borisovich

Vasilenko, Anatoly Grigorovich

Zadachi i Etyudi, 2019

1B5b/2QNp3/1p1rkP1N/6P1/3p4/2P5/b5B1/2K5

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sf8#
    • 1...Rc6
      • 2.Sf8#
      • 2.Qxc6#
    • 1...Rxd7
      • 2.Qe5#
    • 1...Bd5
      • 2.Bh3#
    • 1...exf6
      • 2.Qxd6#
  • Tries
    • 1.Sc5+?
      • 1...bxc5
        • 2.Qxe7#
      • 1...Ke5!
    • 1.Qd8?
      • threat
        • 2.Qxe7#
      • 1...Rxd7
        • 2.Qg8#
      • 1...exf6
        • 2.Qe8#
      • 1...Bxf6!
    • 1.cxd4?
      • threat
        • 2.Sf8#
      • 1...Rc6+
        • 2.Qxc6#
      • 1...Rxd7
        • 2.Qe5#
      • 1...Bg7!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Bh3#
      • 1...Rxc6
        • 2.Sf8#
      • 1...exf6
        • 2.Qxd6#
      • 1...Bb1
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(d);::S(H)
    • R(d);OGATE,SBLOCK,XS(H)::QAR1(G)
    • B(a);SBLOCK::B(B)
    • P(f);N_GUARD,XP(E)::QAR1(G),XR(d)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • P(c);XS(H)::QAR1(G),XP(f)
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(d)
    • Try
      • Q(G);
      • Threat
        • QAR1(G),XP(f)
      • Vars
        • R(d);SBLOCK,XS(H)::QAB(G)
        • P(f);OGATEB,XP(E)::QAR2(G)
      • Refutation
        • B(g);XP(E)
    • Try
      • P(C);XP(b)
      • Threat
        • S(H)
      • Vars
        • R(d);CHECK,OGATEB::QAR2(G),XR(d)
        • R(d);OGATE,SBLOCK,XS(H)::QAR1(G)
      • Refutation
        • B(g);
  • Actual
    • Q(G);P_PINR(d)
    • Threat
      • B(B)
    • Vars
      • R(d);N_SPINR(d),P_PINP(C),XQ(G)::S(H)
      • P(f);N_GUARD,XP(E)::QAR1(G),XR(d)
      • B(a);N_GUARD::B(B)
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