MESON Chess Problem Database

Problem Display
PID: 161355 (5K2/4n3/6k1/8/4p1NQ/R7/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

5K2/4n3/6k1/8/4p1NQ/R7/8/8

#2

4 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Se5#
  • Tries
    • 1.Rf3?
      • threat
        • 2.Se5#
        • 2.Rf6#
        • 2.Qh6#
      • 1...Sd5
        • 2.Se5#
        • 2.Qh6#
      • 1...Sf5
        • 2.Se5#
      • 1...Sc6
        • 2.Rf6#
        • 2.Qh6#
      • 1...Sg8
        • 2.Se5#
      • 1...exf3!
    • 1.Rh3?
      • threat
        • 2.Qf6#
        • 2.Qh5#
      • 1...Sd5
        • 2.Qh5#
      • 1...Sg8
        • 2.Qh5#
      • 1...Kf5!
    • 1.Ra5?
      • threat
        • 2.Rg5#
        • 2.Qh5#
        • 2.Qh6#
      • 1...Sf5
        • 2.Se5#
      • 1...Sg8
        • 2.Rg5#
        • 2.Qh5#
      • 1...Sd5!
    • 1.Ra6+?
      • 1...Kf5
        • 2.Rf6#
      • 1...Sc6!
    • 1.Qg5+?
      • 1...Kh7
        • 2.Rh3#
        • 2.Qh6#
        • 2.Qh5#
        • 2.Qg7#
      • 1...Kxg5!
    • 1.Qf6+?
      • 1...Kh7
        • 2.Rh3#
        • 2.Qg7#
        • 2.Qh6#
      • 1...Kh5!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Se3#
      • 1...Kf5
        • 2.Qf6#
      • 1...Sf5
        • 2.Se5#
      • 1...e3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::S(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(B)
      • Refutation
        • P(a);XR(A)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);SBLOCK::S(B)
      • Refutation
        • S(c);
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(A)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(A);
    • Threat
      • R(A)+S(B)
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • S(c);SBLOCK::R(A)+S(B),DCHECK
      • P(a);::R(A)+S(B),XP(a)
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