MESON Chess Problem Database

Problem Display
PID: 109550 (3R1Q2/8/8/p7/K1kp4/3p4/8/8 w - - 0 1)

Tura, Waldemar

Polish Chess Federation and Gdynia-60 JT, 1987

3R1Q2/8/8/p7/K1kp4/3p4/8/8

#2

3 + 4

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6?
      • threat
        • 2.Rc8#
        • 2.Qc7#
        • 2.Qxd4#
        • 2.Qc6#
      • 1...d2
        • 2.Qxd4#
      • 1...Kc3!
    • 1.Qg7?
      • threat
        • 2.Qxd4#
        • 2.Qc7#
      • 1...Kc5
        • 2.Qc7#
      • 1...d2
        • 2.Qxd4#
      • 1...Kc3!
    • 1.Qf1?
      • threat
        • 2.Qc1#
      • 1...Kc3
        • 2.Qc1#
      • 1...Kc5!
    • 1.Qf2?
      • threat
        • 2.Qxd4#
      • 1...Kc3
        • 2.Rc8#
      • 1...Kc5!
    • 1.Qf5?
      • threat
        • 2.Rc8#
        • 2.Qc8#
      • 1...d2
        • 2.Rc8#
        • 2.Qc2#
      • 1...Kc3!
    • 1.Qf7+?
      • 1...Kc5
        • 2.Qc7#
      • 1...Kc3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qc1#
        • 2.Qc7#
        • 2.Qxd4#
      • 1...Kc3
        • 2.Qc1#
      • 1...Kc5
        • 2.Qc7#
      • 1...d2
        • 2.Qxd4#

Anticipated by 135531(1946)

This anticipates 7941(1994)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(4)
      • Vars
        • P(a);::QAR1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
        • P(a);::QAR1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);P_PINP(a)
      • Threat
        • QAR(C)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(c)
      • Vars
        • K(b);P-FLIGHT::R(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);P_PINP(c)
    • Threat
      • DUALS(3)
    • Vars
      • K(b);N_SPINP(c),P-FLIGHT::QAR2(C)
      • P(a);::QAR1(C),XP(c)
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