MESON Chess Problem Database

Problem Display
PID: 104302 (8/1p2r3/5pp1/5p2/Q2pkN2/4p1Kp/8/8 w - - 0 1)

Blagojevic, Rade

Mezija, 1994

8/1p2r3/5pp1/5p2/Q2pkN2/4p1Kp/8/8

#2

3 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re8
      • 2.Qxe8#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Re5
        • 2.Qd3#
      • 1...Rd7
        • 2.Qe6#
      • 1...e2!
    • 1.Qb5?
      • threat
        • 2.Qd5#
      • 1...e2
        • 2.Qxe2#
      • 1...Re5
        • 2.Qd3#
      • 1...Rd7!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sxg6#
        • 2.Qd5#
      • 1...bxc6!
    • 1.Qa2?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...e2
        • 2.Qxe2#
      • 1...Rd7
        • 2.Qe6#
      • 1...Re5!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...e2
        • 2.Qxe2#
      • 1...Re5
        • 2.Qd3#
      • 1...Rd7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(i);OGATEB::QAR(B),XR(i)
  • Tries
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAB1(B)
      • Vars
        • K(d);P-FLIGHT::QAR1(B)
        • R(i);SBLOCK::QAB1(B)
        • R(i);N_GUARD::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAB1(B)
      • Vars
        • P(a);OGATEB::QAR2(B),XP(a)
        • R(i);SBLOCK::QAB1(B)
      • Refutation
        • R(i);
    • Try
      • Q(B);CHECK,N_PINP(c)
      • Refutation
        • P(h);XQ(B)
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAB1(B)
      • Vars
        • K(d);P-FLIGHT::QAR1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • R(i);N_GUARD::QAR2(B)
      • Refutation
        • R(i);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(d);N_SPINP(c),P-FLIGHT::QAR1(B)
      • P(a);OGATEB::QAR2(B),XP(a)
      • R(i);SBLOCK::QAB1(B)
      • R(i);N_GUARD::QAR2(B)
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