MESON Chess Problem Database

Problem Display
PID: 92283 (8/1Q5p/5p1B/3Pp3/2p1k3/2P2p1P/1N3K2/8 w - - 0 1)

Ederer, Alois

Suddeutsche Schach, 1957

8/1Q5p/5p1B/3Pp3/2p1k3/2P2p1P/1N3K2/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxh7#
    • 1...f5
      • 2.d6#
  • Tries
    • 1.Ke1?
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5
        • 2.d6#
      • 1...f2+!
    • 1.Kf1?
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5
        • 2.d6#
      • 1...f2!
    • 1.Kg1?
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5
        • 2.d6#
      • 1...f2+!
    • 1.Kg3?
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5
        • 2.d6#
      • 1...f2!
    • 1.Sd1?
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5!
    • 1.Qc6?
      • 1...f5
        • 2.Qxc4#
        • 2.d6#
      • 1...Kf5!
    • 1.Qa8?
      • 1...f5
        • 2.d6#
      • 1...Kf5!
    • 1.Qc8?
      • 1...f5
        • 2.Qxc4#
      • 1...Kxd5!
    • 1.Qb5?
      • 1...f5
        • 2.Qxc4#
      • 1...Kf5!
    • 1.Qc7?
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5
        • 2.Qxc4#
      • 1...Kxd5!
    • 1.Qf7?
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5!
    • 1.h4?
      • 1...f5
        • 2.d6#
      • 1...Kf5!
  • Keys
    • 1.Sa4!
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf5
        • 2.Qxh7#
      • 1...f5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(G),XP(f)
    • P(e);SBLOCK::QAB(G)+P(E)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(G),XP(f)
        • P(e);SBLOCK::QAB(G)+P(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(G),XP(f)
        • P(e);SBLOCK::QAB(G)+P(E)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(G),XP(f)
        • P(e);SBLOCK::QAB(G)+P(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(G),XP(f)
        • P(e);SBLOCK::QAB(G)+P(E)
      • Refutation
        • P(a);
    • Try
      • S(A);
      • Vars
        • K(c);S_FLIGHT::QAB(G)
        • K(c);S_FLIGHT::QAB(G),XP(f)
      • Refutation
        • P(e);
    • Try
      • Q(G);
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • P(e);SBLOCK::QAB(G)+P(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • P(e);SBLOCK::QAR2(G),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XP(E)
    • Try
      • Q(G);
      • Vars
        • P(e);SBLOCK::QAR2(G),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(c);S_FLIGHT::QAB(G),XP(f)
        • P(e);SBLOCK::QAR2(G),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XP(E)
    • Try
      • Q(G);
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::QAB(G),XP(f)
      • Refutation
        • P(e);
    • Try
      • P(D);
      • Vars
        • P(e);SBLOCK::QAB(G)+P(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(c);S_FLIGHT::QAB(G)
      • K(c);S_FLIGHT::QAB(G),XP(f)
      • P(e);SBLOCK::S(A)
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