MESON Chess Problem Database

Problem Display
PID: 243715 (K3Q1nb/nR6/NN1k1r2/8/3r4/6p1/6RB/1b5B w - - 0 1)

Baturin, Aleksandr Adrianovich

Shakhmaty v SSSR, 1933

K3Q1nb/nR6/NN1k1r2/8/3r4/6p1/6RB/1b5B

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sc4#
    • 1...Sc6
      • 2.Rd7#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Rd7#
      • 1...Re6
        • 2.Qb8#
      • 1...Se7
        • 2.Qxe7#
      • 1...Rf7!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Sb8#
        • 2.Rc2#
        • 2.Qc5#
      • 1...Kxe5!
    • 1.Qe7+?
      • 1...Kc6
        • 2.Qc5#
      • 1...Sxe7!
  • Keys
    • 1.Rxg3!
      • threat
        • 2.Rd7#
      • 1...Re6
        • 2.Qb8#
      • 1...Se7
        • 2.Qxe7#
      • 1...Re4
        • 2.Rd3#
      • 1...Rd5
        • 2.Sc4#
      • 1...Rf3
        • 2.Rg6#
      • 1...Rf7
        • 2.Rg6#
      • 1...Be4
        • 2.Rg6#
      • 1...Bf5
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,SBLOCK::S(E)
    • S(f);SBLOCK::R1(F)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(F)
      • Vars
        • R(e);SBLOCK::QAB(H)
        • S(g);N_GUARD::QAB1(H),XS(g)
      • Refutation
        • R(e);
    • Try
      • Q(H);CHECK,N_PINP(b)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);N_SPINP(b),OGATE,P-FLIGHT::QAR1(H)
      • Refutation
        • S(g);XQ(H)
  • Actual
    • R(B);XP(b)
    • Threat
      • R1(F)
    • Vars
      • R(e);SBLOCK::QAB(H)
      • S(g);N_GUARD::QAB1(H),XS(g)
      • R(c);::B(C)+R(B),DCHECK
      • R(c);N_GUARD::S(E)
      • R(e);::B(C)+R(B),DCHECK
      • B(a);P_PINR(F),S_CUTR(c)::B(C)+R(B)
      • B(a);S_CUTR(e)::B(C)+R(B)
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