MESON Chess Problem Database

Problem Display
PID: 260955 (1B1R2N1/6p1/2P1p1P1/rR1nN1p1/4k1p1/2pp2Q1/3p4/3B3K w - - 0 1)

Pachl, Franz

2nd HM., Neue Zurcher Zeitung, 1986

1B1R2N1/6p1/2P1p1P1/rR1nN1p1/4k1p1/2pp2Q1/3p4/3B3K

#2

10 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxd3#
    • 1...Kf5
      • 2.Qxg4#
  • Tries
    • 1.Sxg4?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Sf4
        • 2.Sf2#
        • 2.Bf3#
        • 2.Qe3#
        • 2.Qf3#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.Sf7?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Sf4
        • 2.Sxg5#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.Rb4+?
      • 1...Kf5
        • 2.Bxg4#
        • 2.Qxd3#
        • 2.Qxg4#
      • 1...Sxb4!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qxd3#
      • 1...gxf3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qxg4#
      • 1...Kf5
        • 2.Qxd3#
      • 1...Sf4
        • 2.Qe3#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_GUARD,P-FLIGHT,P_SPINS(g)::QAR1(C),XP(c)
    • K(d);N_GUARD,S_CUTS(g),S_FLIGHT::QAB1(C),XP(e)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • QAR1(C)
      • Vars
        • K(d);N_GUARD,P_SPINS(g),S_FLIGHT::QAB(C),XP(c)
        • P(i);::QAR1(C),XP(i)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(g)
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(d);N_GUARD,P_SPINS(g),S_FLIGHT::QAB(C),XP(c)
        • S(g);::S(E),XP(h)
        • P(i);::QAR1(C),XP(i)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(g)
    • Try
      • R(D);CHECK
      • Refutation
        • S(g);XR(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);N_GUARD,P-FLIGHT,P_SPINS(g)::QAR1(C),XP(c)
      • Refutation
        • P(e);XQ(C)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(g)::QAR(C),XP(e)
      • K(d);N_GUARD,P_SPINS(g),S_FLIGHT::QAB(C),XP(c)
      • S(g);N_GUARD::QAR1(C)
      • P(i);::QAR1(C),XP(i)
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