MESON Chess Problem Database

Problem Display
PID: 243265 (1B1QN3/4P2K/r5P1/2pR4/n2pk1p1/r2p1N2/2P1BP2/2b2n2 w - - 0 1)

Aliovsadzade, Rauf Gadzhiaga ogli

2nd Prize=, Source?, 1975

1B1QN3/4P2K/r5P1/2pR4/n2pk1p1/r2p1N2/2P1BP2/2b2n2

#2

11 + 10

15148 Sadier Collection 2021
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#
    • 1...d2
      • 2.Sg5#
  • 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#

Anticipated by 157912(1975)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(c);N_GUARD::P(A),XP(d)
    • R(j);N_GUARD::S(K)
    • R(j);N_GUARD::S(K),XR(j)
    • R(j);N_GUARD,P_PINP(G)::S(K)
    • 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(j)::S(K)
    • P(d);S_CUTB(a)::S(D)
  • Tries
    • Try
      • R(E);CHECK,XP(f)
      • Vars
        • K(g);S_FLIGHT::QAR2(J)
      • Refutation
        • P(i);XR(E)
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • R(j);N_GUARD::QAR2(J),XR(j)
        • R(j);N_GUARD::S(K),XR(j)
        • S(b);S_CUTB(a)::S(D)
      • Refutation
        • S(b);
  • Actual
    • R(E);
    • Threat
      • QAB1(J)
    • Vars
      • K(g);S_FLIGHT,XR(E)::QAR2(J)
      • R(j);N_GUARD::S(K),XR(j)
      • S(b);S_CUTB(a)::R1(E)
      • S(e);S_CUTR(c)::B(B),XP(d)
      • S(e);S_CUTR(j)::S(K)
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