MESON Chess Problem Database

Problem Display
PID: 110145 (2B5/5b1R/3Q4/kp6/P7/8/8/K7 w - - 0 1)

Saks, Oleg Pavlovich

Kudesnik 02. TT, 1993

2B5/5b1R/3Q4/kp6/P7/8/8/K7

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Ra7#
    • 1...Bb3
      • 2.Ra7#
    • 1...Bc4
      • 2.Ra7#
    • 1...Bd5
      • 2.Ra7#
    • 1...Bh5
      • 2.Ra7#
    • 1...Be6
      • 2.Ra7#
    • 1...Bg6
      • 2.Ra7#
    • 1...Be8
      • 2.Ra7#
    • 1...Bg8
      • 2.Ra7#
    • 1...bxa4
      • 2.Qc5#
    • 1...b4
      • 2.Qa6#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Qc7#
        • 2.Qa6#
        • 2.Qd8#
      • 1...bxa4
        • 2.Qb4#
        • 2.Qc5#
        • 2.Qa6#
      • 1...b4
        • 2.Qxb4#
        • 2.Qa6#
      • 1...Bc4!
    • 1.Rxf7?
      • threat
        • 2.Ra7#
      • 1...bxa4
        • 2.Rf5#
        • 2.Qc5#
      • 1...Kxa4!
    • 1.Rg7?
      • 1...bxa4
        • 2.Qc5#
      • 1...Ba2
        • 2.Ra7#
      • 1...Bb3
        • 2.Ra7#
      • 1...Bc4
        • 2.Ra7#
      • 1...Bd5
        • 2.Ra7#
      • 1...Bh5
        • 2.Ra7#
      • 1...Be6
        • 2.Ra7#
      • 1...Bg6
        • 2.Ra7#
      • 1...Be8
        • 2.Ra7#
      • 1...Bg8
        • 2.Ra7#
      • 1...b4
        • 2.Qa6#
      • 1...Kxa4!
    • 1.Qc5?
      • threat
        • 2.Qxb5#
      • 1...Bc4
        • 2.Ra7#
      • 1...Be8
        • 2.Ra7#
      • 1...Kxa4!
    • 1.Qd4?
      • 1...bxa4
        • 2.Qc5#
      • 1...b4
        • 2.Qa7#
      • 1...Ba2
        • 2.Ra7#
      • 1...Bb3
        • 2.Ra7#
      • 1...Bd5
        • 2.Ra7#
      • 1...Bh5
        • 2.Ra7#
      • 1...Be6
        • 2.Ra7#
      • 1...Bg6
        • 2.Ra7#
      • 1...Be8
        • 2.Ra7#
      • 1...Bg8
        • 2.Ra7#
      • 1...Bc4!
  • Keys
    • 1.Kb2!
      • 1...Kxa4
        • 2.Qa3#
      • 1...bxa4
        • 2.Qc5#
      • 1...Ba2
        • 2.Ra7#
      • 1...Bb3
        • 2.Ra7#
      • 1...Bc4
        • 2.Ra7#
      • 1...Bd5
        • 2.Ra7#
      • 1...Bh5
        • 2.Ra7#
      • 1...Be6
        • 2.Ra7#
      • 1...Bg6
        • 2.Ra7#
      • 1...Be8
        • 2.Ra7#
      • 1...Bg8
        • 2.Ra7#
      • 1...b4
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE::R(D)
    • B(c);OGATE,SBLOCK::R(D)
    • P(b);OGATEB,SBLOCK,XP(B)::QAR2(C)
    • P(b);SBLOCK::QAR1(C)
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(3)
      • Refutation
        • B(c);
    • Try
      • R(D);XB(c)
      • Threat
        • R(D)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • R(D);
      • Vars
        • P(b);OGATEB,SBLOCK,XP(B)::QAR2(C)
        • B(c);OGATE::R(D)
        • B(c);OGATE,SBLOCK::R(D)
        • P(b);SBLOCK::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • B(c);OGATE::R(D)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XP(B)
    • Try
      • Q(C);
      • Vars
        • P(b);OGATEB,SBLOCK,XP(B)::QAR2(C)
        • P(b);SBLOCK::QAR2(C)
        • B(c);OGATE::R(D)
        • B(c);OGATE,SBLOCK::R(D)
      • Refutation
        • B(c);
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(C)
      • P(b);OGATEB,SBLOCK,XP(B)::QAR2(C)
      • B(c);OGATE::R(D)
      • B(c);OGATE,SBLOCK::R(D)
      • P(b);SBLOCK::QAR1(C)
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