MESON Chess Problem Database

Problem Display
PID: 171411 (8/4N3/4pQ2/8/4k3/3p4/3K2P1/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Na Smenu!, 1996

8/4N3/4pQ2/8/4k3/3p4/3K2P1/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qh4#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qe5#
        • 2.Qf3#
      • 1...e5
        • 2.Qxe5#
        • 2.Qf3#
      • 1...Kd5!
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd5!
    • 1.Qa1?
      • 1...e5
        • 2.Qa4#
      • 1...Kf4!
    • 1.Qb2?
      • 1...e5
        • 2.Qb4#
      • 1...Kf4!
    • 1.Qc3?
      • 1...e5
        • 2.Qb4#
        • 2.Qc4#
      • 1...Kf4!
    • 1.Qg7?
      • 1...e5
        • 2.Qg4#
      • 1...Kf4!
    • 1.Qh8?
      • 1...e5
        • 2.Qh4#
      • 1...Kf4!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Qd4#
      • 1...Ke3
        • 2.Qf3#
      • 1...e5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);::QAR1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(c);SBLOCK::QAR(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(c);SBLOCK::QAR(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(c);SBLOCK::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(c);SBLOCK::QAR(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • P(c);SBLOCK::QAB1(C)
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