MESON Chess Problem Database

Problem Display
PID: 120629 (8/4B3/4B3/3pkP2/4p3/2P1Qb2/6p1/6K1 w - - 0 1)

Korski, Leon

Themes-64, 1962

8/4B3/4B3/3pkP2/4p3/2P1Qb2/6p1/6K1

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Qg3#
    • 1...Be2
      • 2.Qg3#
    • 1...Bg4
      • 2.Qg3#
    • 1...Bh5
      • 2.Qg3#
    • 1...d4
      • 2.cxd4#
  • Tries
    • 1.Bd7?
      • 1...Bd1
        • 2.Qg3#
      • 1...Be2
        • 2.Qg3#
      • 1...Bg4
        • 2.Qg3#
      • 1...Bh5
        • 2.Qg3#
      • 1...d4!
    • 1.Bc8?
      • 1...Bd1
        • 2.Qg3#
      • 1...Be2
        • 2.Qg3#
      • 1...Bg4
        • 2.Qg3#
      • 1...Bh5
        • 2.Qg3#
      • 1...d4!
    • 1.Bd6+?
      • 1...Kf6
        • 2.Qh6#
      • 1...Kxd6!
    • 1.Bf6+?
      • 1...Kd6
        • 2.Qb6#
      • 1...Kxf6!
    • 1.Qc5?
      • threat
        • 2.Qd6#
        • 2.Qc7#
      • 1...e3
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qb6?
      • threat
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...e3
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qa7?
      • threat
        • 2.Qb8#
        • 2.Qc7#
      • 1...e3
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qxf3?
      • threat
        • 2.Qg3#
      • 1...e3
        • 2.Qxe3#
      • 1...exf3!
  • Keys
    • 1.Bxd5!
      • 1...Kxd5
        • 2.Qc5#
      • 1...Kxf5
        • 2.Qg5#
      • 1...Bd1
        • 2.Qxe4#
      • 1...Be2
        • 2.Qxe4#
      • 1...Bg4
        • 2.Qxe4#
      • 1...Bh5
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);OGATE::QAB(C)
    • P(d);OGATE::P(B),XP(d)
  • Tries
    • Try
      • B(E);
      • Vars
        • B(b);OGATE::QAB(C)
      • Refutation
        • P(d);
    • Try
      • B(E);
      • Vars
        • B(b);OGATE::QAB(C)
      • Refutation
        • P(d);
    • Try
      • B(F);CHECK
      • Vars
        • K(e);N_SPINP(c),S_FLIGHT::QAR2(C)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT,XB(F)
    • Try
      • B(F);CHECK
      • Vars
        • K(e);N_SPINP(c),S_FLIGHT::QAR2(C)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT,XB(F)
    • Try
      • Q(C);N_PINP(c),P_PINP(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(C)
      • Refutation
        • K(e);N_SPINP(d),S_FLIGHT
    • Try
      • Q(C);N_PINP(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(c);::QAB1(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(C);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(C);N_PINP(c),XB(b)
      • Threat
        • QAB(C)
      • Vars
        • P(c);OGATEB::QAR2(C),XP(c)
      • Refutation
        • P(c);XQ(C)
  • Actual
    • B(E);XP(d)
    • Vars
      • K(e);N_SPINP(c),OGATEB,P-FLIGHT,XB(E)::QAR1(C)
      • K(e);N_SPINP(c),OGATEB,P-FLIGHT,XP(D)::QAR1(C)
      • B(b);N_GUARD::QAR1(C),XP(c)
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