MESON Chess Problem Database

Problem Display
PID: 157912 (1B1QN3/4P3/r7/2pR3P/n2pk3/r2p1N1K/2P1BP2/2b2n2 w - - 0 1)

Aliovsadzade, Rauf Gadzhiaga ogli

Comm., Schach, 1975

1B1QN3/4P3/r7/2pR3P/n2pk3/r2p1N1K/2P1BP2/2b2n2

#2

11 + 9

15148 Sadier Collection 2016
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.cxd3#
    • 1...Ra2
      • 2.cxd3#
    • 1...Ra5
      • 2.Sf6#
    • 1...Rf6
      • 2.Sxf6#
    • 1...Ra7
      • 2.Sf6#
    • 1...Ra8
      • 2.Sf6#
    • 1...Bb2
      • 2.Sg5#
    • 1...Bg5
      • 2.Sxg5#
    • 1...Sd2
      • 2.Sg5#
    • 1...Se3
      • 2.Sg5#
    • 1...Sc3
      • 2.cxd3#
    • 1...Sb6
      • 2.Sf6#
  • Tries
    • 1.Rxd4+?
      • 1...Kf5
        • 2.Qd5#
      • 1...cxd4!
    • 1.Qd7?
      • threat
        • 2.Qf5#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rf6
        • 2.Sxf6#
      • 1...Se3
        • 2.Sg5#
      • 1...Sg3!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qd5#
      • 1...Kxf5
        • 2.Qd5#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Se3
        • 2.Rf4#
      • 1...Sc3
        • 2.Bxd3#
      • 1...Sb6
        • 2.Sd6#

This anticipates 243265(1975)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(c);N_GUARD::P(A),XP(d)
    • R(i);N_GUARD::S(K)
    • R(i);N_GUARD::S(K),XR(i)
    • B(a);N_GUARD::S(D)
    • B(a);N_GUARD::S(D),XB(a)
    • S(b);S_CUTB(a)::S(D)
    • S(e);S_CUTR(c)::P(A),XP(d)
    • S(e);S_CUTR(i)::S(K)
  • Tries
    • Try
      • R(F);CHECK,XP(f)
      • Vars
        • K(g);S_FLIGHT::QAR2(J)
      • Refutation
        • P(h);XR(F)
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • R(i);N_GUARD::QAR2(J),XR(i)
        • R(i);N_GUARD::S(K),XR(i)
        • S(b);S_CUTB(a)::S(D)
      • Refutation
        • S(b);
  • Actual
    • R(F);
    • Threat
      • QAB1(J)
    • Vars
      • K(g);S_FLIGHT,XR(F)::QAR2(J)
      • R(i);N_GUARD::S(K),XR(i)
      • S(b);S_CUTB(a)::R1(F)
      • S(e);S_CUTR(c)::B(B),XP(d)
      • S(e);S_CUTR(i)::S(K)
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