MESON Chess Problem Database

Problem Display
PID: 38164 (8/4Q3/5R2/8/2ppp3/4k3/8/3K4 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Zvezda, 1968

8/4Q3/5R2/8/2ppp3/4k3/8/3K4

#2

3 + 4

2786 More Fun with Chess Miniatures 2000
145 StrateGems 2012
3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qc5#
      • 2.Qa7#
  • Tries
    • 1.Qa3+?
      • 1...d3
        • 2.Qc5#
        • 2.Qa7#
      • 1...c3!
    • 1.Qb4?
      • threat
        • 2.Qd2#
      • 1...Kd3
        • 2.Qd2#
      • 1...d3
        • 2.Qc5#
        • 2.Qb6#
      • 1...c3!
    • 1.Qd6?
      • threat
        • 2.Qg3#
      • 1...d3
        • 2.Qc5#
        • 2.Qb6#
      • 1...Kd3!
    • 1.Qe5?
      • threat
        • 2.Qg3#
      • 1...d3
        • 2.Qc5#
      • 1...Kd3!
    • 1.Qe6?
      • threat
        • 2.Qh3#
      • 1...d3
        • 2.Qb6#
      • 1...Kd3!
    • 1.Qc7?
      • threat
        • 2.Qg3#
      • 1...d3
        • 2.Qb6#
        • 2.Qc5#
        • 2.Qa7#
      • 1...Kd3!
    • 1.Qd7?
      • threat
        • 2.Qh3#
      • 1...d3
        • 2.Qa7#
      • 1...Kd3!
    • 1.Qg7?
      • threat
        • 2.Qg3#
      • 1...d3
        • 2.Qg1#
        • 2.Qa7#
      • 1...Kd3!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qh3#
      • 1...Kd3
        • 2.Rf3#
      • 1...d3
        • 2.Qa7#

This anticipates 265879(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(d)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • QAR2(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);N_SPINP(d),P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);N_SPINP(d),P-FLIGHT
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • QAR(C)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);N_PINP(d)
    • Threat
      • QAR(C)
    • Vars
      • K(a);P-FLIGHT,P_SPINP(d)::R(B)
      • P(c);OGATEB,SBLOCK::QAB(C)
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