MESON Chess Problem Database

Problem Display
PID: 122405 (8/8/8/q7/N3BB2/8/3N4/2k1K3 w - - 0 1)

Wrobel, Marian

Zadaniowiec, 1943

8/8/8/q7/N3BB2/8/3N4/2k1K3

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd2+
      • 2.Bxd2#
    • 1...Qb6
      • 2.Sb3#
    • 1...Qc7
      • 2.Sb3#
    • 1...Qd8
      • 2.Sb3#
    • 1...Qxa4
      • 2.Sc4#
    • 1...Qb5
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
    • 1...Qc5
      • 2.Sb3#
    • 1...Qd5
      • 2.Sb3#
    • 1...Qe5
      • 2.Sb3#
    • 1...Qf5
      • 2.Sb3#
    • 1...Qg5
      • 2.Sb3#
    • 1...Qh5
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
    • 1...Qa6
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
    • 1...Qa7
      • 2.Sb3#
    • 1...Qa8
      • 2.Sb1#
      • 2.Sf1#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sc4#
  • Keys
    • 1.Ke2!
      • threat
        • 2.Sb3#
      • 1...Qxd2+
        • 2.Bxd2#
      • 1...Qb5+
        • 2.Sc4#
      • 1...Qh5+
        • 2.Sf3#
      • 1...Qa6+
        • 2.Sc4#
      • 1...Qxa4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(b);CHECK,OGATE,P_SPINQ(b),XS(B)::B(E),XQ(b)
    • Q(b);N_PINS(B)::B(E)+S(B),DCHECK
    • Q(b);N_PINS(B),XS(C)::B(E)+S(B)
    • Q(b);N_PINS(B),P_PINB(D)::B(E)+S(B),DCHECK
  • Actual
    • K(A);N_SPINS(B),P-FLIGHT
    • Threat
      • B(E)+S(B),DCHECK
    • Vars
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(B)::B(E),XQ(b)
      • Q(b);CHECK,N_GUARD::B(E)+S(B)
      • Q(b);N_GUARD,XS(C)::B(E)+S(B)
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