MESON Chess Problem Database

Problem Display
PID: 243843 (1b3R2/3p2rp/K3p3/4B1kn/6N1/5P1R/6NP/1B1n2Q1 w - - 0 1)

Chepizhni, Viktor Ivanovich

64 Shakhmatnoe obozrenie, 2011

1b3R2/3p2rp/K3p3/4B1kn/6N1/5P1R/6NP/1B1n2Q1

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Bf6#
    • 1...Sf4
      • 2.Bf6#
    • 1...Sf6
      • 2.Bxf6#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Rxh5#
      • 1...Sxf4
        • 2.Bf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sg3!
    • 1.Bxg7?
      • threat
        • 2.Bh6#
      • 1...h6
        • 2.Bxh6#
      • 1...Sxg7!
    • 1.Rf5+?
      • 1...Kg6
        • 2.Sh4#
      • 1...exf5!
    • 1.Qf2?
      • threat
        • 2.Qh4#
      • 1...Sg3
        • 2.Bf6#
      • 1...Sxf2!
    • 1.Qe3+?
      • 1...Sf4
        • 2.Bf6#
        • 2.Qxf4#
      • 1...Sxe3!
    • 1.Qc5?
      • threat
        • 2.Bf4#
        • 2.Bf6#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Sf4
        • 2.Bxf4#
        • 2.Bf6#
      • 1...Sf6
        • 2.Bf4#
        • 2.Bxf6#
      • 1...d5!
    • 1.Qe1?
      • threat
        • 2.Qh4#
      • 1...Sg3
        • 2.Bf6#
      • 1...Sf2!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Rxh5#
      • 1...Kh6
        • 2.Rxh5#
      • 1...Sxf6
        • 2.Bxf6#
      • 1...Sg3
        • 2.f4#
      • 1...Sf4
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::B(H)
    • S(c);N_GUARD::B(H),XS(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • R1(F),XS(c)
      • Vars
        • S(c);N_GUARD,SBLOCK,XS(C)::B(H)
        • S(c);N_GUARD::QAR(B)+S(G),XS(c)
      • Refutation
        • S(c);
    • Try
      • B(H);XR(f)
      • Threat
        • B(H)
      • Vars
        • P(g);::B(H),XP(g)
      • Refutation
        • S(c);XB(H)
    • Try
      • R(J);CHECK
      • Vars
        • K(b);P-FLIGHT::S(C)
      • Refutation
        • P(d);XR(J)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(c);N_GUARD::B(H)
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);OGATE,P_SPINB(h),XB(H)::QAR2(B),XB(h)
      • Refutation
        • P(e);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(c);N_GUARD::B(H)
      • Refutation
        • S(a);
  • Actual
    • S(G);
    • Threat
      • R1(F),XS(c)
    • Vars
      • K(b);P_SPINS(c),S_FLIGHT::R1(F),XS(c)
      • S(c);OGATE,XS(G)::B(H),XS(c)
      • S(c);N_GUARD::P(E)
      • S(c);N_GUARD::QAR(B)+S(C),XS(c)
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