MESON Chess Problem Database

Problem Display
PID: 227124 (6BN/4K1kP/p5N1/2p3P1/3q4/2B5/1Q6/b7 w - - 0 1)

Fastosky, Pedro

Die Welt, 1957

(First published on Sat Aug 17 1957)

6BN/4K1kP/p5N1/2p3P1/3q4/2B5/1Q6/b7

#2

8 + 5

15601 Albrecht-Leiss-Degener Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5+
      • 2.Bxe5#
    • 1...Qf6+
      • 2.Bxf6#
    • 1...c4
      • 2.Bxd4#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Qb7#
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Qf6+
        • 2.Bxf6#
      • 1...Bxb2!
    • 1.Ke8?
      • threat
        • 2.Qb7#
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Bxb2!
    • 1.Qxa1?
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Qf6+
        • 2.Bxf6#
      • 1...Qxc3
        • 2.Qxc3#
      • 1...c4
        • 2.Bxd4#
      • 1...a5!
    • 1.Qf2?
      • threat
        • 2.Qf7#
        • 2.Qf8#
      • 1...Qf6+
        • 2.Qxf6#
      • 1...Qe5+!
    • 1.Qb7?
      • threat
        • 2.Ke6#
        • 2.Ke8#
      • 1...Qe5+
        • 2.Kd8#
      • 1...Qf6+
        • 2.Ke8#
      • 1...Bxc3!
    • 1.Qb8?
      • threat
        • 2.Qf8#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qf6+!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qh6#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qf6+
        • 2.gxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(b);CHECK,OGATE::B(B),XQ(b)
    • P(c);N_GUARD::B(B),XQ(b)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • Q(b);CHECK,OGATE::B(B),XQ(b)
      • Refutation
        • B(a);XQ(A)
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • Q(b);CHECK,OGATE::B(B),XQ(b)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);XB(a)
      • Vars
        • Q(b);CHECK,OGATE::B(B),XQ(b)
        • Q(b);OGATE,XB(B)::QAB(A),XQ(b)
        • P(c);N_GUARD::B(B),XQ(b)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
      • Refutation
        • Q(b);CHECK
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK::QAR(A)+K(E)
      • Refutation
        • B(a);N_SPINQ(b),XB(B)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • Q(b);CHECK,N_GUARD::QAB(A),XQ(b)
      • Refutation
        • Q(b);CHECK
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • Q(b);CHECK,N_GUARD::QAB(A),XQ(b)
      • Q(b);CHECK,OGATE::P(C),XQ(b)
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