MESON Chess Problem Database

Problem Display
PID: 160164 (6K1/1Q6/5pk1/6n1/8/5B2/8/7R w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

6K1/1Q6/5pk1/6n1/8/5B2/8/7R

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qg7#
  • Tries
    • 1.Be4+?
      • 1...f5
        • 2.Qg7#
      • 1...Sxe4!
    • 1.Bh5+?
      • 1...Kh6
        • 2.Qg7#
      • 1...Kf5!
    • 1.Rg1?
      • threat
        • 2.Qh7#
      • 1...Kh6
        • 2.Qg7#
      • 1...f5
        • 2.Qa6#
        • 2.Qc6#
        • 2.Qb6#
        • 2.Qg7#
      • 1...Kf5!
    • 1.Rh6+?
      • 1...Kxh6
        • 2.Qg7#
      • 1...Kf5!
    • 1.Qd5?
      • 1...Sxf3
        • 2.Qh5#
      • 1...Sh3
        • 2.Qh5#
      • 1...Se4
        • 2.Qh5#
      • 1...Se6
        • 2.Qh5#
      • 1...Sf7
        • 2.Qh5#
      • 1...Sh7
        • 2.Qh5#
      • 1...f5!
    • 1.Qb5?
      • 1...Sxf3
        • 2.Qh5#
      • 1...Sh3
        • 2.Qh5#
      • 1...Se4
        • 2.Qh5#
      • 1...Se6
        • 2.Qh5#
      • 1...Sf7
        • 2.Qh5#
      • 1...Sh7
        • 2.Qh5#
      • 1...f5!
  • Keys
    • 1.Rh5!
      • 1...Kf5
        • 2.Qe4#
      • 1...Sxf3
        • 2.Qf7#
        • 2.Qh7#
      • 1...Sh3
        • 2.Qf7#
        • 2.Qg7#
        • 2.Qh7#
      • 1...Se4
        • 2.Qf7#
        • 2.Qg7#
        • 2.Qh7#
      • 1...Se6
        • 2.Qf7#
        • 2.Qh7#
      • 1...Sf7
        • 2.Qxf7#
      • 1...Sh7
        • 2.Qf7#
        • 2.Qg7#
        • 2.Qxh7#
      • 1...f5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR1(C)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAR1(C)
      • Refutation
        • S(a);XB(B)
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);P_PINS(a)
      • Threat
        • QAB1(C)
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);N_SPINS(a),S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT,XR(A)::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • S(a);OGATE,XB(B)::QAB1(C)
        • S(a);OGATE::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Vars
        • S(a);OGATE,XB(B)::QAB1(C)
        • S(a);OGATE::QAB1(C)
      • Refutation
        • P(b);
  • Actual
    • R(A);
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • P(b);SBLOCK::QAR1(C)
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