MESON Chess Problem Database

Problem Display
PID: 11785 (8/3r4/2p5/6p1/1B2R1K1/1RNkN3/4p3/4n3 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

2nd Place, Chervoni Girnik, 1972

8/3r4/2p5/6p1/1B2R1K1/1RNkN3/4p3/4n3

#2

6 + 6

2988 Izbrannie Kompozitsi 1985
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Sa2#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Sb1#
        • 2.Scd1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Rd5+
        • 2.Scxd5#
      • 1...Kd2
        • 2.Sa2#
      • 1...Rf7+!
    • 1.Rc4?
      • threat
        • 2.Sb1#
        • 2.Scd1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Se4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Kd2
        • 2.Sb1#
        • 2.Scd1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Se4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Kxe3
        • 2.Sd1#
      • 1...Rd5
        • 2.Sb1#
        • 2.Scd1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Se4#
        • 2.Sb5#
        • 2.Scxd5#
      • 1...Rd4+!
    • 1.Rf4?
      • threat
        • 2.Sb1#
        • 2.Scd1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Sb5#
        • 2.Scd5#
      • 1...Kd2
        • 2.Sa2#
      • 1...Kxe3
        • 2.Sd1#
        • 2.Sd5#
      • 1...Rd5
        • 2.Sb1#
        • 2.Scd1#
        • 2.Sa2#
        • 2.Sa4#
        • 2.Sb5#
        • 2.Scxd5#
      • 1...gxf4!
    • 1.Re5?
      • threat
        • 2.Sb5#
      • 1...Rd4+
        • 2.Se4#
      • 1...Kd2
        • 2.Sa2#
      • 1...Kd4!
    • 1.Re7?
      • threat
        • 2.Sb5#
      • 1...Rd4+
        • 2.Se4#
      • 1...Kd2
        • 2.Sa2#
      • 1...Kd4
        • 2.Sxe2#
      • 1...Rxe7!
    • 1.Re8?
      • threat
        • 2.Sb5#
      • 1...Rd4+
        • 2.Se4#
      • 1...Kd2
        • 2.Sa2#
      • 1...Kd4
        • 2.Sxe2#
      • 1...Re7!
  • Keys
    • 1.Re6!
      • threat
        • 2.Sb5#
      • 1...Rd4+
        • 2.Se4#
      • 1...Kd2
        • 2.Sa2#
      • 1...Kd4
        • 2.Sxe2#

This is a version of 36346

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::B(D)+S(B)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • DUALS(6)
      • Vars
        • R(f);CHECK::R(A)+S(B),XR(f)
        • K(c);P-FLIGHT::B(D)+S(B)
      • Refutation
        • R(f);CHECK
    • Try
      • R(E);
      • Threat
        • DUALS(7)
      • Vars
        • K(c);P-FLIGHT,XS(C)::R(A)+S(B),DCHECK
      • Refutation
        • R(f);CHECK
    • Try
      • R(E);
      • Threat
        • DUALS(6)
      • Vars
        • K(c);P-FLIGHT::B(D)+S(B)
      • Refutation
        • P(d);XR(E)
    • Try
      • R(E);
      • Threat
        • R(A)+S(B)
      • Vars
        • R(f);CHECK,SBLOCK::R(A)+S(B)
        • K(c);P-FLIGHT::B(D)+S(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);
      • Threat
        • R(A)+S(B)
      • Vars
        • R(f);CHECK,SBLOCK::R(A)+S(B)
        • K(c);P-FLIGHT::B(D)+S(B)
        • K(c);P-FLIGHT::S(B),XP(b)
      • Refutation
        • R(f);XR(E)
    • Try
      • R(E);
      • Threat
        • R(A)+S(B)
      • Vars
        • R(f);CHECK,SBLOCK::R(A)+S(B)
        • K(c);P-FLIGHT::B(D)+S(B)
        • K(c);P-FLIGHT::S(B),XP(b)
      • Refutation
        • R(f);
  • Actual
    • R(E);
    • Threat
      • R(A)+S(B)
    • Vars
      • R(f);CHECK,SBLOCK::R(A)+S(B)
      • K(c);P-FLIGHT::B(D)+S(B)
      • K(c);P-FLIGHT::S(B),XP(b)
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