MESON Chess Problem Database

Problem Display
PID: 71664 (N3N3/1pb5/B1p1R3/2kPpR2/npPp4/2r2b2/Q5pK/1q1r2n1 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Loshinski, Lev Ilich

2nd Prize, Kubbel MT, 1945-1946

N3N3/1pb5/B1p1R3/2kPpR2/npPp4/2r2b2/Q5pK/1q1r2n1

#2

9 + 14

14752 Soviet Chess Compositions (1945-1947) 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Qxc4#
    • 1...Sb6
      • 2.Qa5#
    • 1...b3
      • 2.Qa3#
    • 1...d3
      • 2.Qf2#
    • 1...e4+
      • 2.d6#
    • 1...bxa6
      • 2.Rxc6#
    • 1...b5
      • 2.Rxc6#
    • 1...b6
      • 2.Rxc6#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...e4+
        • 2.d6#
      • 1...Rxc4
        • 2.Qxc4#
      • 1...b3
        • 2.Qa3#
      • 1...d3
        • 2.Qf2#
      • 1...Sb6
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(e);OGATE,XP(C)::QAR1(A),XR(e)
    • S(g);OGATE::QAR2(A)
    • P(h);OGATEB::QAB(A)
    • P(i);OGATEB::QAB(A)
    • P(k);CHECK::R(E)+P(D)
    • P(m);N_GUARD,XB(F)::R1(G),XP(l)
    • P(m);N_GUARD::R1(G),XP(l)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • P(k);CHECK::R(E)+P(D)
      • R(e);OGATE,XP(C)::QAR1(A),XR(e)
      • P(h);OGATEB::QAB(A)
      • P(i);OGATEB::QAB(A)
      • S(g);OGATE::QAR2(A)
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