MESON Chess Problem Database

Problem Display
PID: 214752 (6B1/6p1/1K6/pNp5/7R/8/6p1/kb4Q1 w - - 0 1)

Shinkman, William Anthony

Detroit Free Press, 1877

6B1/6p1/1K6/pNp5/7R/8/6p1/kb4Q1

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ba2?
      • threat
        • 2.Qxb1#
      • 1...Kb2
        • 2.Qxb1#
      • 1...Kxa2!
    • 1.Bh7?
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qxb1#
      • 1...Kb2
        • 2.Qxb1#
      • 1...g6!
    • 1.Rb4?
      • threat
        • 2.Rxb1#
        • 2.Qxb1#
      • 1...cxb4
        • 2.Qd4#
      • 1...c4
        • 2.Qxb1#
      • 1...axb4!
    • 1.Qc1?
      • threat
        • 2.Ra4#
        • 2.Qc3#
      • 1...a4
        • 2.Rxa4#
        • 2.Qc3#
      • 1...c4!
    • 1.Qe1?
      • threat
        • 2.Qc3#
        • 2.Qe5#
      • 1...Kb2
        • 2.Qc3#
      • 1...g1Q
        • 2.Qc3#
      • 1...g1B
        • 2.Qc3#
      • 1...c4!
  • Keys
    • 1.Rh1!
      • threat
        • 2.Qxb1#
      • 1...Kb2
        • 2.Qxb1#
      • 1...gxh1Q
        • 2.Qxg7#
      • 1...gxh1S
        • 2.Qxg7#
      • 1...gxh1B
        • 2.Qxg7#
      • 1...gxh1R
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR1(A),XB(b)
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAR1(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT,XB(E)
    • Try
      • B(E);
      • Threat
        • QAR1(A),XB(b)
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAB1(A),XB(b)
        • K(a);N_SPINB(b),S_FLIGHT::QAR1(A),XB(b)
      • Refutation
        • P(f);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);N_GUARD,XR(B)::QAB(A)
        • P(e);::QAR1(A),XB(b)
      • Refutation
        • P(d);XR(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_SPINB(b),S_FLIGHT::QAB1(A)
        • P(c);::QAB(A)
      • Refutation
        • P(e);
  • Actual
    • R(B);
    • Threat
      • QAR1(A),XB(b)
    • Vars
      • K(a);N_SPINB(b),S_FLIGHT::QAR1(A),XB(b)
      • P(c);OGATE,SBLOCK,XR(B)::QAB(A),XP(f)
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