MESON Chess Problem Database

Problem Display
PID: 232957 (8/8/8/K7/N7/pk2p1Q1/4B3/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2016

8/8/8/K7/N7/pk2p1Q1/4B3/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6?
      • 1...Kc2
        • 2.Qd1#
      • 1...a2
        • 2.Qd3#
      • 1...Ka2!
    • 1.Qc7?
      • threat
        • 2.Qc4#
      • 1...a2
        • 2.Qc3#
      • 1...Ka2!
    • 1.Qg1?
      • threat
        • 2.Qb1#
      • 1...Ka2
        • 2.Bc4#
      • 1...Kc2
        • 2.Qd1#
      • 1...a2!
    • 1.Qg6?
      • threat
        • 2.Qb1#
      • 1...a2
        • 2.Qd3#
      • 1...Ka2!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qb1#
      • 1...Ka2
        • 2.Bc4#
      • 1...Kc2
        • 2.Qd1#
      • 1...a2
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);N_PINP(c)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAB1(B)
      • Vars
        • P(a);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAR2(B)
      • Vars
        • P(a);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);N_PINP(c)
    • Threat
      • QAR2(B)
    • Vars
      • K(b);S_FLIGHT::B(A)
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);SBLOCK::QAR1(B)
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