MESON Chess Problem Database

Problem Display
PID: 243661 (8/8/8/6p1/3Q2K1/3N4/3b4/3kN3 w - - 0 1)

Banaszek, Marcin

Szachy, 1985

8/8/8/6p1/3Q2K1/3N4/3b4/3kN3

#2

4 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • 1...Kc1
        • 2.Qa1#
      • 1...Kxe1
        • 2.Qg1#
      • 1...gxf4!
    • 1.Qf2?
      • threat
        • 2.Qf3#
      • 1...Bc1
        • 2.Qc2#
      • 1...Bc3
        • 2.Qc2#
      • 1...Be3
        • 2.Qc2#
      • 1...Bb4
        • 2.Qc2#
      • 1...Bf4
        • 2.Qc2#
      • 1...Ba5
        • 2.Qc2#
      • 1...Bxe1!
  • Keys
    • 1.Sc1!
      • 1...Kxc1
        • 2.Qa1#
      • 1...Kxe1
        • 2.Qg1#

This anticipates 157476(1990)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);P_PINB(b)
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR2(C)
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(A)::QAR2(C)
      • Refutation
        • P(c);XS(B)
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • B(b);OGATE::QAB1(C)
      • Refutation
        • B(b);XS(A)
  • Actual
    • S(B);P_PINB(b)
    • Vars
      • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(B)::QAR2(C)
      • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(A)::QAR2(C)
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