MESON Chess Problem Database

Problem Display
PID: 38802 (1bKQ4/8/8/1p2p3/k7/8/8/1R6 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

2nd Prize, Baltiskie Shakhmaty, 1991

1bKQ4/8/8/1p2p3/k7/8/8/1R6

#2

3 + 4

2786 More Fun with Chess Miniatures 2000
145 StrateGems 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qa5#
  • Tries
    • 1.Rb4+?
      • 1...Ka3
        • 2.Qa5#
      • 1...Kxb4!
    • 1.Qb6?
      • threat
        • 2.Qa6#
      • 1...Ka3
        • 2.Qa5#
        • 2.Qa6#
      • 1...Bc7!
    • 1.Qe7?
      • threat
        • 2.Qb4#
      • 1...Bd6
        • 2.Qa7#
      • 1...b4
        • 2.Qxb4#
      • 1...Ka5!
    • 1.Qd1+?
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5!
    • 1.Qd2?
      • threat
        • 2.Qb4#
        • 2.Qa2#
      • 1...Ka3
        • 2.Qa5#
      • 1...b4
        • 2.Qxb4#
      • 1...Bd6!
    • 1.Qd4+?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ka5
        • 2.Ra1#
      • 1...b4
        • 2.Qxb4#
      • 1...exd4!
    • 1.Qd6?
      • threat
        • 2.Qb4#
        • 2.Qa6#
      • 1...Ka5
        • 2.Ra1#
      • 1...b4
        • 2.Qxb4#
        • 2.Qa6#
      • 1...Bc7
        • 2.Qb4#
      • 1...Bxd6!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qa2#
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5
        • 2.Qxb5#
      • 1...Bd6
        • 2.Qa8#
      • 1...b4
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT,XR(A)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • B(d);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • B(d);N_GUARD::QAR(C)
        • P(b);::QAR1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);::QAR1(C),XP(b)
      • Refutation
        • B(d);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • K(a);P-FLIGHT::R(A)
        • P(b);P_SPINP(b)::QAR1(C),XP(b)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::R(A)
        • B(d);::QAR1(C)
      • Refutation
        • B(d);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);P-FLIGHT,P_SPINP(b)::QAR1(C),XP(b)
      • B(d);N_GUARD::QAR(C)
      • P(b);SBLOCK::R(A)
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