MESON Chess Problem Database

Problem Display
PID: 10416 (Qb6/8/3pBK1N/2r1NR2/p6p/3pp1pk/bn5p/q2rn3 w - - 0 1)

Loshinski, Lev Ilich

2nd Place, Olympic Ty., 1964

Qb6/8/3pBK1N/2r1NR2/p6p/3pp1pk/bn5p/q2rn3

#2

6 + 15

3747 FIDE Album (1962-1964) 1968
5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rf4#
    • 1...Rd5
      • 2.Rf2#
    • 1...Bb1
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf4#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sc4
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf4#
      • 2.Rg5#
      • 2.Rh5#
    • 1...h1Q
      • 2.Qxh1#
    • 1...h1S
      • 2.Qxh1#
    • 1...h1B
      • 2.Qxh1#
    • 1...h1R
      • 2.Qxh1#
    • 1...g2
      • 2.Rf3#
    • 1...d5
      • 2.Rf2#
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf4#
      • 1...Rxf5+
        • 2.Bxf5#
      • 1...Sc4+
        • 2.Re5#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1S
        • 2.Qxh1#
      • 1...h1B
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#
      • 1...g2
        • 2.Rf3#
      • 1...d5
        • 2.Rf2#
      • 1...Rc4
        • 2.Rf4#
      • 1...Sg2
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(m);S_CUTB(d)::B(C)+R(B)
    • P(f);OGATEB::QAR2(F),XQ(f)
    • P(f);OGATEB::QAR2(F),XS(f)
    • P(f);OGATEB::QAR2(F),XB(f)
    • P(f);OGATEB::QAR2(F),XR(f)
    • P(i);SBLOCK::B(C)+R(B),DCHECK
    • P(n);S_CUTB(d)::B(C)+R(B)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(m);CHECK,OGATE,P_SPINR(m),XR(B)::B(C),XR(m)
      • S(e);CHECK,S_CUTB(d)::B(C)+R(B)
      • P(f);OGATEB::QAR2(F),XQ(f)
      • P(f);OGATEB::QAR2(F),XS(f)
      • P(f);OGATEB::QAR2(F),XB(f)
      • P(f);OGATEB::QAR2(F),XR(f)
      • P(i);SBLOCK::B(C)+R(B),DCHECK
      • P(n);S_CUTB(d),S_CUTR(m)::B(C)+R(B)
      • R(m);N_GUARD,S_CUTB(d)::B(C)+R(B)
      • S(c);SBLOCK::B(C)+R(B)
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