MESON Chess Problem Database

Problem Display
PID: 239665 (2Qn3b/3p3K/1p4N1/p1p3p1/1PBk2b1/4p1N1/8/2R1B1n1 w - - 0 1)

Pituk, Alexander

Magyar Sakkelet, 1953

2Qn3b/3p3K/1p4N1/p1p3p1/1PBk2b1/4p1N1/8/2R1B1n1

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qxd7#
    • 1...Be2
      • 2.Qxd7#
    • 1...Bh5
      • 2.Qxd7#
    • 1...Se6
      • 2.Qxd7#
    • 1...Sb7
      • 2.Qxh8#
    • 1...e2
      • 2.Bf2#
    • 1...b5
      • 2.Qxc5#
    • 1...d5
      • 2.Qxg4#
    • 1...d6
      • 2.Qxg4#
  • Tries
    • 1.Qa8?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...cxb4
        • 2.Qd5#
      • 1...e2
        • 2.Bf2#
        • 2.Qe4#
      • 1...Bf3
        • 2.Sf5#
      • 1...Bf5
        • 2.Sxf5#
        • 2.Qd5#
      • 1...Be6
        • 2.Qe4#
      • 1...Sb7
        • 2.Qxh8#
      • 1...d5
        • 2.Qxd5#
      • 1...Sc6!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Bc3#
      • 1...axb4
        • 2.Qa1#
      • 1...cxb4
        • 2.Qxb6#
      • 1...e2
        • 2.Bf2#
      • 1...Se2
        • 2.Rd1#
      • 1...b5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • B(d);N_GUARD::QAR(H),XP(i)
    • S(j);S_CUTB(d)::QAR(H),XP(i)
    • S(j);OGATE::QAB(H),XB(k)
    • P(b);OGATEB::B(B)
    • P(h);N_GUARD::QAB1(H),XP(f)
    • P(i);OGATE::QAR(H),XB(d)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XP(D)::QAR1(H)
        • B(d);N_GUARD::S(C)
        • B(d);::QAR1(H)
        • S(j);OGATE::QAB(H),XB(k)
        • P(i);::QAR1(H),XP(i)
      • Refutation
        • S(j);
  • Actual
    • Q(H);
    • Threat
      • B(B)
    • Vars
      • P(e);OGATE,XP(D)::QAB(H)
      • P(f);OGATEB,XP(D)::QAB(H),XP(h)
      • P(b);OGATEB::B(B)
      • S(a);S_CUTB(d)::R(A)
      • P(h);OGATE::QAR2(H)
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