MESON Chess Problem Database

Problem Display
PID: 163526 (8/3N4/1p6/1P2p3/3kP3/1Pppp1p1/6B1/5Q1K w - - 0 1)

Lukyanov, V?

Nagnibida, Mykola Ivanovich

Novi Temi, 1973

8/3N4/1p6/1P2p3/3kP3/1Pppp1p1/6B1/5Q1K

#2

7 + 7

3713 Snap 2017
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qa1#
    • 1...d2
      • 2.Qc4#
    • 1...e2
      • 2.Qg1#
  • Tries
    • 1.Kg1?
      • 1...c2
        • 2.Qa1#
      • 1...d2
        • 2.Qc4#
      • 1...e2!
    • 1.Bf3?
      • 1...c2
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...d2
        • 2.Qc4#
      • 1...g2+!
    • 1.Qa1?
      • threat
        • 2.Qa4#
      • 1...e2
        • 2.Qg1#
      • 1...d2!
    • 1.Qb1?
      • 1...c2
        • 2.Qa1#
        • 2.Qb2#
      • 1...e2
        • 2.Qg1#
      • 1...d2!
    • 1.Qc1?
      • 1...c2
        • 2.Qb2#
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...d2!
    • 1.Qd1?
      • 1...c2
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...d2!
    • 1.Qe1?
      • 1...e2
        • 2.Qg1#
      • 1...c2
        • 2.Qb4#
        • 2.Qa1#
      • 1...d2!
    • 1.Qg1?
      • 1...c2
        • 2.Qa1#
      • 1...d2!
    • 1.Qf7?
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...c2
        • 2.Qc4#
      • 1...e2!
    • 1.Qf8?
      • threat
        • 2.Qb4#
        • 2.Qd6#
      • 1...c2
        • 2.Qb4#
      • 1...d2
        • 2.Qd6#
      • 1...e2!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxe5#
        • 2.Qxb6#
        • 2.Qd6#
      • 1...c2
        • 2.Qxe5#
      • 1...d2
        • 2.Qd6#
      • 1...e2
        • 2.Qxb6#

Anticipated by 103974(1936-1937), 179258(1948)

This anticipates 178709(2009-2010)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAB(A)
    • P(b);OGATE::QAR1(A)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(a);OGATEB::QAB(A)
        • P(b);OGATE::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Vars
        • P(a);OGATEB::QAB(A)
        • P(c);OGATEB::QAB(A)
        • P(b);OGATE::QAR1(A)
      • Refutation
        • P(d);CHECK
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINP(b)
      • Vars
        • P(a);OGATEB::QAB(A)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINP(c)
      • Vars
        • P(a);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR2(A)
        • P(b);::QAR2(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);P_PINP(f)
    • Threat
      • DUALS(3)
    • Vars
      • P(a);::QAB1(A),XP(f)
      • P(b);::QAR2(A)
      • P(c);::QAB(A),XP(g)
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