MESON Chess Problem Database

Problem Display
PID: 171419 (8/8/3N4/8/2p5/2pk4/5Q2/2K1B3 w - - 0 1)

Antipov, Viacheslav Pavlovich

Smena, 1997

8/8/3N4/8/2p5/2pk4/5Q2/2K1B3

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Qd2#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qe3#
        • 2.Qc2#
        • 2.Qf3#
      • 1...c2
        • 2.Qe3#
        • 2.Qxc2#
        • 2.Qf3#
      • 1...Ke4!
    • 1.Qh4?
      • threat
        • 2.Qe4#
      • 1...Ke3
        • 2.Qe4#
      • 1...Ke2!
    • 1.Qc2+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qg2?
      • threat
        • 2.Qe4#
      • 1...Ke3
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qf5+?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kd4
        • 2.Bf2#
      • 1...Ke2!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Qe3#
      • 1...cxd2+
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);P-FLIGHT::B(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • P(a);CHECK,OGATE,XB(B)::QAR1(C),XP(a)
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