MESON Chess Problem Database

Problem Display
PID: 177879 (7Q/1N1B2p1/4P1R1/p7/R2Pk2N/1P6/5p2/2B2K2 w - - 0 1)

Storozhenko, Ivan Ivanovich

1st Comm., Sahs (Latvia), 1981

7Q/1N1B2p1/4P1R1/p7/R2Pk2N/1P6/5p2/2B2K2

#2

11 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rc4?
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5
        • 2.Bc6#
      • 1...a4!
    • 1.Rg4+?
      • 1...Kd5
        • 2.Rxa5#
      • 1...Kd3!
    • 1.Qxg7?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qb8?
      • 1...Kd5
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qc8?
      • 1...Kd5
        • 2.Bc6#
        • 2.Qc6#
      • 1...Kd3!
    • 1.Qe8?
      • 1...Kd5
        • 2.Bc6#
      • 1...Kd3!
    • 1.Qf8?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd5
        • 2.Qf3#
        • 2.Qf5#
      • 1...Kd3!
    • 1.d5+?
      • 1...Kxd5
        • 2.Rg5#
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...Kd3!
    • 1.e7?
      • 1...Kd5
        • 2.Bc6#
      • 1...Kd3!
  • Keys
    • 1.Qh7!
      • 1...Kd3
        • 2.Rg3#
      • 1...Kd5
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Vars
        • K(b);S_FLIGHT::S(I)
        • K(b);S_FLIGHT::B(J)
      • Refutation
        • P(c);
    • Try
      • R(H);CHECK
      • Vars
        • K(b);S_FLIGHT::R(D),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);XP(d)
      • Vars
        • K(b);S_FLIGHT::QAR1(K)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);
      • Vars
        • K(b);S_FLIGHT::QAR1(K)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);
      • Vars
        • K(b);S_FLIGHT::B(J)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(d)::QAR(K)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(G);
      • Vars
        • K(b);S_FLIGHT::B(J)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(K);
    • Vars
      • K(b);S_FLIGHT::QAB(K)+R(H),DCHECK
      • K(b);S_FLIGHT::R(H)
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