MESON Chess Problem Database

Problem Display
PID: 264593 (b7/8/7R/8/4p3/8/7p/4NK1k w - - 0 1)

Fomichev, Evgeny Vasilevich

Sp. Comm., US Problem Bulletin, 1994

b7/8/7R/8/4p3/8/7p/4NK1k

#5

3 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rxh2#
      • 1...exf3
        • 2.Ra6
          • threat
            • 3.Kf2
              • threat
                • 4.Ra1#
              • 3...Be4
                • 4.Ra1+
                  • 4...Bb1
                    • 5.Rxb1#
            • 3.Ra1
              • threat
                • 4.Kf2#
              • 3...Be4
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
          • 2...Be4
            • 3.Ra1
              • threat
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
              • 3...Bd3+
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
                  • 4...Bf1
                    • 5.Rxf1#
              • 3...Bb1
                • 4.Rxb1
                  • 4...f2
                    • 5.Kxf2#
              • 3...Bc2
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
                  • 4...Bd1
                    • 5.Rxd1#
              • 3...Bf5
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
              • 3...Bg6
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
              • 3...Bh7
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
              • 3...f2
                • 4.Kxf2+
                  • 4...Bb1
                    • 5.Rxb1#
          • 2...Bd5
            • 3.Ra1
              • threat
                • 4.Kf2#
              • 3...Bc4+
                • 4.Kf2+
                  • 4...Bf1
                    • 5.Rxf1#
              • 3...Ba2
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
              • 3...Bb3
                • 4.Kf2+
                  • 4...Bd1
                    • 5.Rxd1#
              • 3...Be4
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
          • 2...Bc6
            • 3.Ra1
              • threat
                • 4.Kf2#
              • 3...Bb5+
                • 4.Kf2+
                  • 4...Bf1
                    • 5.Rxf1#
              • 3...Ba4
                • 4.Kf2+
                  • 4...Bd1
                    • 5.Rxd1#
              • 3...Be4
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
          • 2...Bb7
            • 3.Ra1
              • threat
                • 4.Kf2#
              • 3...Ba6+
                • 4.Kf2+
                  • 4...Bf1
                    • 5.Rxf1#
              • 3...Be4
                • 4.Kf2+
                  • 4...Bb1
                    • 5.Rxb1#
          • 2...f2
            • 3.Kxf2
              • threat
                • 4.Ra1#
              • 3...Bg2
                • 4.Ra1+
                  • 4...Bf1
                    • 5.Rxf1#
              • 3...Bf3
                • 4.Ra1+
                  • 4...Bd1
                    • 5.Rxd1#
                • 4.Kxf3
                  • 4...Kg1
                    • 5.Ra1#
              • 3...Be4
                • 4.Ra1+
                  • 4...Bb1
                    • 5.Rxb1#
            • 3.Ra1
              • threat
                • 4.Kxf2#
              • 3...Bg2+
                • 4.Kxf2+
                  • 4...Bf1
                    • 5.Rxf1#
              • 3...Bf3
                • 4.Kxf2+
                  • 4...Bd1
                    • 5.Rxd1#
              • 3...Be4
                • 4.Kxf2+
                  • 4...Bb1
                    • 5.Rxb1#

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