MESON Chess Problem Database

Problem Display
PID: 174866 (r3kNK1/p1pp1pb1/N4p2/2Q2p2/B2p4/8/8/8 w q - 0 1)

Barth, Michael

Muller, Dieter

7th Place, Match: Croatia - Saxony, 2003-2005

r3kNK1/p1pp1pb1/N4p2/2Q2p2/B2p4/8/8/8

#2

5 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Sxc7#
    • 1...Bxf8
      • 2.Qxf8#
    • 1...0-0-0
      • 2.Qxc7#
  • Tries
    • 1.Qxd4?
      • threat
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qe3#
      • 1...0-0-0!
    • 1.Qd6?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Qxc7#
      • 1...Rd8
        • 2.Sxc7#
      • 1...cxd6!
    • 1.Qb5?
      • threat
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Qb8#
      • 1...Rd8
        • 2.Qe2#
      • 1...c6!
    • 1.Qxf5?
      • threat
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qe4#
      • 1...0-0-0!
    • 1.Qxc7?
      • threat
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Rd8!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Qa8#
      • 1...Rd8
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(i);SBLOCK::S(C),XP(e)
    • B(h);OGATE,XS(D)::QAR1(B),XB(h)
    • K(j);0-0-0,N_SPINP(f),OGATEB,P_PINS(D),P_SPINP(e)::QAR1(B),XP(e)
  • Tries
    • Try
      • Q(B);XP(a)
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • K(j);N_SPINP(f),P-FLIGHT,P_PINS(D)::QAR1(B),XP(f)
        • K(j);P-FLIGHT::QAR1(B),XP(f)
        • R(i);SBLOCK::QAR(B)
      • Refutation
        • K(j);0-0-0,N_SPINP(f),P_PINS(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • K(j);P-FLIGHT::QAR1(B),XP(f)
        • K(j);0-0-0,N_SPINP(f),OGATEB,P_PINS(D)::QAR1(B),XP(e)
        • R(i);SBLOCK::S(C),XP(e)
      • Refutation
        • P(e);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • K(j);N_SPINP(f),P-FLIGHT,P_PINS(D)::QAR1(B),XP(f)
        • K(j);N_SPINP(f),P-FLIGHT::QAR1(B),XP(f)
        • K(j);0-0-0,N_SPINP(f),P_PINS(D)::QAR1(B)
        • R(i);SBLOCK::QAR(B)
      • Refutation
        • P(e);N_SPINP(f)
    • Try
      • Q(B);XP(b)
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • K(j);N_SPINP(f),P-FLIGHT,P_PINS(D)::QAR1(B),XP(f)
        • K(j);N_SPINP(f),P-FLIGHT::QAR1(B),XP(f)
        • R(i);SBLOCK::QAR(B)
      • Refutation
        • K(j);0-0-0,P_PINS(D)
    • Try
      • Q(B);XP(e)
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • K(j);P-FLIGHT,P_PINS(D)::QAR1(B),XP(f)
      • Refutation
        • R(i);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(f)
    • Vars
      • K(j);N_SPINP(f),P-FLIGHT,P_PINS(D)::QAR1(B),XP(f)
      • K(j);P-FLIGHT::QAR1(B),XP(f)
      • K(j);0-0-0,N_SPINP(f),P_PINS(D)::QAR2(B)
      • R(i);SBLOCK::QAB1(B),XP(g)
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