MESON Chess Problem Database

Problem Display
PID: 193981 (8/8/1K6/2N5/2p5/kbQ5/8/8 w - - 0 1)

Mortriner, Lucius

Our Young People, 1916

8/8/1K6/2N5/2p5/kbQ5/8/8

#2

3 + 3

6490 yacpdb 2019
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • 1...Ka2
        • 2.Qb2#
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa5#
      • 1...cxd3!
    • 1.Se4?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka2!
    • 1.Sa6?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa5#
      • 1...Ka2!
    • 1.Se6?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka2!
    • 1.Sb7?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka2!
    • 1.Sd7?
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka2!
    • 1.Qa1+?
      • 1...Kb4
        • 2.Sa6#
        • 2.Qa5#
      • 1...Ba2!
  • Keys
    • 1.Sa4!
      • 1...Ka2
        • 2.Qb2#
      • 1...Kxa4
        • 2.Qa5#

This anticipates 140898(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);XS(B)
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • S(B);
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • Q(A);CHECK,N_PINB(b)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • S(B);
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(B)::QAR1(A)
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Developed and maintained by Brian Stephenson.
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