MESON Chess Problem Database

Problem Display
PID: 267994 (8/4p3/1K2Bp2/8/3k1p2/1p3Q2/1P6/8 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Shakhmatnaya kompozitsiya, 1995

8/4p3/1K2Bp2/8/3k1p2/1p3Q2/1P6/8

#2

4 + 5

3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd5#
  • Tries
    • 1.Ka5?
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...f5!
    • 1.Kb5?
      • 1...Ke5
        • 2.Qd5#
      • 1...f5!
    • 1.Kc6?
      • 1...Ke5
        • 2.Qd5#
      • 1...f5!
    • 1.Bf5?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Ke5!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxd3!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qxf4#
      • 1...Kxc4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qd5#
      • 1...e5
        • 2.Qd3#

Anticipated by 119478(1995)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • P(d);
    • Try
      • B(D);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • B(D);
    • Threat
      • QAR2(B),XP(c)
    • Vars
      • K(b);N_GUARD,P-FLIGHT,XB(D)::QAR2(B)
      • K(b);N_GUARD,S_FLIGHT::QAR1(B)
      • P(e);SBLOCK::QAR1(B)
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