MESON Chess Problem Database

Problem Display
PID: 110350 (q3r3/r1pn1N2/5ppN/8/p2pkP2/Q3P2R/B5P1/5K2 w - - 0 1)

Mlynka, Karol

Hassberg MT, 1987

q3r3/r1pn1N2/5ppN/8/p2pkP2/Q3P2R/B5P1/5K2

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...dxe3
      • 2.Qxe3#
    • 1...d3
      • 2.Qb4#
    • 1...f5
      • 2.Sg5#
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Bb1+?
      • 1...d3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rh4?
      • threat
        • 2.f5#
      • 1...Se5
        • 2.fxe5#
      • 1...f5
        • 2.Sg5#
      • 1...g5
        • 2.fxg5#
      • 1...d3!
    • 1.Qb4?
      • threat
        • 2.Qxd4#
      • 1...Kd3
        • 2.Bb1#
      • 1...Qd5
        • 2.Bb1#
      • 1...c5!
  • Keys
    • 1.exd4!
      • threat
        • 2.Qe3#
      • 1...Kxd4
        • 2.Qb4#
      • 1...Kxf4
        • 2.Rh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • P(b);OGATE,XP(E)::QAR1(D),XP(b)
    • P(b);OGATEB,SBLOCK::QAR(D)
    • P(d);N_GUARD::S(I)
    • P(g);N_GUARD::S(I)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAB1(D),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Threat
        • R(F)+P(G)
      • Vars
        • S(h);OGATE::R(F)+P(G),XS(h)
        • P(d);N_GUARD::S(I)
        • P(e);OGATE::R(F)+P(G),XP(e)
      • Refutation
        • P(b);
    • Try
      • Q(D);P_PINP(b)
      • Threat
        • QAR1(D),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::B(B)
        • Q(i);SBLOCK::B(B)
      • Refutation
        • P(g);
  • Actual
    • P(E);XP(b)
    • Threat
      • QAR1(D)
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(E)::QAR2(D)
      • K(c);OGATEB,P-FLIGHT,XP(G)::R(F)
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