MESON Chess Problem Database

Problem Display
PID: 15582 (8/8/6pp/2Q5/6k1/3K1R2/8/3B4 w - - 0 1)

Agapov, Igor Alexeyevich

3/4 Prize, Bron MT, 1986

8/8/6pp/2Q5/6k1/3K1R2/8/3B4

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
6490 yacpdb 2009
5454 Near Snap 2021
9939 64 Shakhmatnoe obozrenie 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Re3+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kh4!
    • 1.Qg1+?
      • 1...Kh5
        • 2.Rh3#
        • 2.Rf4#
      • 1...Kh4!
    • 1.Qf2?
      • 1...Kh5
        • 2.Rf5#
      • 1...g5
        • 2.Re3#
      • 1...h5
        • 2.Qg3#
      • 1...Kg5!
    • 1.Qb4+?
      • 1...Kh5
        • 2.Rg3#
        • 2.Rf5#
      • 1...Kg5!
    • 1.Qd4+?
      • 1...Kh5
        • 2.Rg3#
        • 2.Rf5#
      • 1...Kg5!
    • 1.Qc4+?
      • 1...Kh5
        • 2.Rg3#
        • 2.Rf5#
      • 1...Kg5!
    • 1.Qf5+?
      • 1...Kh4
        • 2.Rh3#
      • 1...gxf5!
  • Keys
    • 1.Qe3!
      • 1...Kh4
        • 2.Rh3#
      • 1...Kh5
        • 2.Rh3#
      • 1...g5
        • 2.Rf4#
      • 1...h5
        • 2.Qf4#

This anticipates 234681(2010)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::B(A)+R(C),DCHECK
        • P(b);SBLOCK::B(A)+R(C)
        • P(c);SBLOCK::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • P(b);XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT::R1(C)
      • K(a);S_FLIGHT::B(A)+R(C),DCHECK
      • P(b);SBLOCK::B(A)+R(C),DCHECK
      • P(c);SBLOCK::QAR1(D)
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