MESON Chess Problem Database

Problem Display
PID: 101975 (1rbr4/Bn1Q4/NR5b/4p1n1/2P1k3/8/2Pp2N1/1K1B1R2 w - - 0 1)

Bernstein, A

Sokolov, L?

64 Shakhmatnoe obozrenie, 1936

1rbr4/Bn1Q4/NR5b/4p1n1/2P1k3/8/2Pp2N1/1K1B1R2

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.Qd3#
      • 2.Qd5#
    • 1...Rf8
      • 2.Qd3#
      • 2.Qd5#
    • 1...Rg8
      • 2.Qd3#
      • 2.Qd5#
    • 1...Rh8
      • 2.Qd3#
      • 2.Qd5#
    • 1...Sf3
      • 2.Bxf3#
    • 1...Sh3
      • 2.Bf3#
    • 1...Sf7
      • 2.Bf3#
    • 1...Sh7
      • 2.Bf3#
    • 1...Sa5
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
  • Tries
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Bxf5!
    • 1.Qc6+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.c3?
      • threat
        • 2.Bc2#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Rxd7!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Re3#
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sh3
        • 2.Bf3#
      • 1...Se6
        • 2.Qh7#
      • 1...Sf7
        • 2.Bf3#
      • 1...Sh7
        • 2.Bf3#
      • 1...Sa5
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::B(B),XS(d)
    • S(d);N_GUARD::B(B)
    • S(f);N_GUARD,P_PINR(H)::S(G)
    • S(f);N_GUARD,P_PINR(H)::S(G),XS(f)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(J)
      • Refutation
        • B(h);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAB1(J),XR(i)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(D);
      • Threat
        • B(B)
      • Vars
        • S(f);N_GUARD,P_PINR(H)::S(G),XS(f)
      • Refutation
        • R(i);XQ(J)
  • Actual
    • R(H);
    • Threat
      • R1(H)
    • Vars
      • S(d);N_GUARD::B(B),XS(d)
      • S(d);N_GUARD::B(B)
      • S(d);N_GUARD,S_CUTB(h)::QAB(J)
      • S(f);N_GUARD,P_PINR(H)::S(G)
      • S(f);N_GUARD,P_PINR(H)::S(G),XS(f)
      • S(f);P_PINR(H),S_CUTR(i)::QAB(J)
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