MESON Chess Problem Database

Problem Display
PID: 194202 (8/3p4/5K2/1Ppk4/3pN3/5Q2/P7/8 w - - 0 1)

Tauber, F Aurel

Magyar Sakkvilag, 1917

8/3p4/5K2/1Ppk4/3pN3/5Q2/P7/8

#2

5 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb3#
    • 1...d3
      • 2.Qxd3#
    • 1...c4
      • 2.Qf5#
    • 1...d6
      • 2.Sd2#
  • Tries
    • 1.Kf5?
      • 1...Kc4
        • 2.Qb3#
      • 1...d3
        • 2.Qxd3#
      • 1...d6
        • 2.Sd2#
      • 1...c4!
    • 1.Sf2+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kd6!
    • 1.Sc3+?
      • 1...Kd6
        • 2.Qg3#
        • 2.Qf4#
      • 1...Kc4!
    • 1.Sg3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kd6!
    • 1.Sg5+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Kd6!
    • 1.Qd3?
      • 1...d6
        • 2.Sc3#
      • 1...c4!
    • 1.Qh3?
      • 1...Kc4
        • 2.Qb3#
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qf5#
      • 1...d6
        • 2.Qe6#
      • 1...Kxe4!
    • 1.a4?
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qf5#
      • 1...d6
        • 2.Sd2#
      • 1...Kc4!
  • Keys
    • 1.a3!
      • 1...Kc4
        • 2.Sd6#
      • 1...d3
        • 2.Qxd3#
      • 1...c4
        • 2.Qf5#
      • 1...d6
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(B)
    • P(a);OGATEB::QAR2(B),XP(a)
    • P(b);SBLOCK::QAR2(B)
    • P(d);SBLOCK::QAB(B)+S(C)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(d);SBLOCK::QAB(B)+S(C)
      • Refutation
        • P(b);
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);P_PINP(a)
      • Vars
        • P(d);SBLOCK::S(C)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(b);SBLOCK::QAR2(B)
        • P(d);N_GUARD::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • P(A);
      • Vars
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(b);SBLOCK::QAR2(B)
        • P(d);SBLOCK::QAB(B)+S(C)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(A);
    • Vars
      • K(c);S_FLIGHT::S(C)
      • P(a);OGATEB::QAR2(B),XP(a)
      • P(b);SBLOCK::QAR2(B)
      • P(d);SBLOCK::QAB(B)+S(C)
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