MESON Chess Problem Database

Problem Display
PID: 244693 (8/8/3Q4/8/p7/1B2bK2/3R4/2k5 w - - 0 1)

Chistyakov, Nikolay

Kudesnik, 2006

8/8/3Q4/8/p7/1B2bK2/3R4/2k5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3+?
      • 1...Kb1
        • 2.Bc2#
        • 2.Qb2#
      • 1...Kxd2!
    • 1.Qd4?
      • threat
        • 2.Rd1#
        • 2.Qb2#
      • 1...Kb1
        • 2.Qb2#
      • 1...Bxd2
        • 2.Qa1#
      • 1...axb3
        • 2.Qb2#
      • 1...a3
        • 2.Rd1#
      • 1...Bxd4!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Rd1#
        • 2.Qb2#
      • 1...Kb1
        • 2.Qb2#
      • 1...Kxd2
        • 2.Qxe3#
      • 1...Bxd2
        • 2.Qa1#
      • 1...axb3
        • 2.Qb2#
      • 1...Bd4
        • 2.Qe1#
      • 1...a3
        • 2.Rd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
        • B(b);SBLOCK,XR(A)::QAR2(D)
        • P(c);XB(B)::QAB1(D)
        • P(c);::R1(A)
      • Refutation
        • B(b);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • K(a);OGATEB,S_FLIGHT,XR(A)::QAB1(D),XB(b)
      • B(b);SBLOCK,XR(A)::QAR2(D)
      • P(c);XB(B)::QAB1(D)
      • B(b);OGATE::QAR2(D)
      • P(c);::R1(A)
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