MESON Chess Problem Database

Problem Display
PID: 263249 (1b4n1/5p1q/1QR1p2r/3pk1Bp/K1p4N/p1p5/2pP2B1/3r4 w - - 0 1)

Kwiatkowski, Marek

2nd HM., Szachy, 1984

1b4n1/5p1q/1QR1p2r/3pk1Bp/K1p4N/p1p5/2pP2B1/3r4

#2

7 + 14

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Qe3#
    • 1...Qh8
      • 2.Qe3#
    • 1...Rg6
      • 2.Qe3#
    • 1...d4
      • 2.Rc5#
      • 2.Qa5#
      • 2.Qc5#
      • 2.Qb5#
      • 2.Qxb8#
    • 1...f5
      • 2.Qe3#
    • 1...f6
      • 2.Rxe6#
  • Tries
    • 1.dxc3?
      • threat
        • 2.Qxb8#
      • 1...Rb1
        • 2.Qd4#
      • 1...Ba7
        • 2.Qc7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...f5
        • 2.Qe3#
      • 1...f6
        • 2.Rxe6#
      • 1...Bd6!
    • 1.d4+?
      • 1...Rxd4
        • 2.Qxb8#
      • 1...cxd4 ep!
  • Keys
    • 1.Rxc4!
      • threat
        • 2.Qxb8#
      • 1...dxc4
        • 2.Qc5#
      • 1...Rb1
        • 2.d4#
      • 1...Bd6
        • 2.Qd4#
      • 1...Ba7
        • 2.Qc7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...f5
        • 2.Sf3#
      • 1...f6
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(l);N_GUARD::QAR2(F)
    • R(j);S_CUTQ(l)::QAR2(F)
    • P(k);S_CUTQ(l)::QAR2(F)
    • P(k);N_GUARD,S_CUTR(j)::R1(G),XP(i)
  • Tries
    • Try
      • P(A);XP(d)
      • Threat
        • QAB(F),XB(m)
      • Vars
        • R(a);N_GUARD::QAB1(F)
        • B(m);N_GUARD::QAB(F)
        • B(m);N_GUARD::QAB(F),XB(m)
        • P(k);S_CUTQ(l)::QAR2(F)
        • P(k);N_GUARD,S_CUTR(j)::R1(G),XP(i)
      • Refutation
        • B(m);
    • Try
      • P(A);CHECK
      • Vars
        • R(a);SBLOCK,XP(A)::QAB(F),XB(m)
      • Refutation
        • P(e);EP,XP(A)
  • Actual
    • R(G);XP(e)
    • Threat
      • QAB(F),XB(m)
    • Vars
      • P(f);OGATEB,XR(G)::QAR2(F)
      • R(a);N_GUARD::P(A)
      • B(m);SBLOCK::QAB1(F)
      • B(m);N_GUARD::QAB(F)
      • B(m);N_GUARD::QAB(F),XB(m)
      • P(k);SBLOCK::S(D)
      • P(k);SBLOCK::B(E)
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