MESON Chess Problem Database

Problem Display
PID: 171350 (8/2p5/2K5/8/1kp5/8/Q2R4/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Temp-64 (Nikolaev), 1995

8/2p5/2K5/8/1kp5/8/Q2R4/8

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qb2#
    • 1...c3
      • 2.Rd4#
  • Tries
    • 1.Rd1?
      • 1...c3
        • 2.Rb1#
        • 2.Rd4#
      • 1...Kc3!
    • 1.Re2?
      • 1...c3
        • 2.Re4#
      • 1...Kc3!
    • 1.Rf2?
      • 1...c3
        • 2.Rf4#
      • 1...Kc3!
    • 1.Rg2?
      • 1...c3
        • 2.Rg4#
      • 1...Kc3!
    • 1.Rh2?
      • 1...c3
        • 2.Rh4#
      • 1...Kc3!
    • 1.Rd3?
      • threat
        • 2.Qa3#
      • 1...c3
        • 2.Rd4#
      • 1...cxd3!
    • 1.Rd5?
      • 1...c3
        • 2.Rd4#
        • 2.Rb5#
      • 1...Kc3!
    • 1.Rd7?
      • 1...c3
        • 2.Rd4#
      • 1...Kc3!
    • 1.Rd8?
      • 1...c3
        • 2.Rd4#
        • 2.Rb8#
      • 1...Kc3!
    • 1.Qxc4+?
      • 1...Ka3
        • 2.Ra2#
      • 1...Ka5
        • 2.Ra2#
        • 2.Rd5#
        • 2.Qb5#
      • 1...Kxc4!
    • 1.Qb2+?
      • 1...Ka5
        • 2.Qa3#
        • 2.Qb5#
      • 1...Ka4!
  • Keys
    • 1.Qb1+!
      • 1...Ka3
        • 2.Ra2#
      • 1...Kc3
        • 2.Qb2#
      • 1...Ka4
        • 2.Ra2#
      • 1...Ka5
        • 2.Ra2#
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
    • P(b);OGATEB,SBLOCK::R(B)
  • Tries
    • Try
      • R(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • QAB1(A)
      • Vars
        • P(b);OGATEB,SBLOCK::R(B)
      • Refutation
        • P(b);XR(B)
    • Try
      • R(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB,SBLOCK::R(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::R1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);CHECK
    • Vars
      • K(a);S_FLIGHT::R1(B)
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::R(B)
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