MESON Chess Problem Database

Problem Display
PID: 154358 (4Q2n/4N3/5R2/4k3/bK3N1P/1p4Pq/1R2B1P1/B5n1 w - - 0 1)

Erokhin, Vladimir Alekseevich

Source?, 0000

4Q2n/4N3/5R2/4k3/bK3N1P/1p4Pq/1R2B1P1/B5n1

#2

11 + 6

5007 Zadachi i Etyudi 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Rxb3#
    • 1...Sxe2
      • 2.Rxe2#
  • Tries
    • 1.Sf5+?
      • 1...Kxf6
        • 2.Qe6#
      • 1...Bxe8!
    • 1.Seg6+?
      • 1...Kd4
        • 2.Rd2#
        • 2.Rxb3#
        • 2.Rd6#
        • 2.Qe5#
      • 1...Kxf6!
    • 1.Bf3?
      • threat
        • 2.Re2#
        • 2.Rxb3#
      • 1...Kd4
        • 2.Rxb3#
      • 1...Kxf6
        • 2.Rxb3#
      • 1...Qxg2
        • 2.Re2#
      • 1...Sxf3
        • 2.Re2#
      • 1...Qd7
        • 2.Re2#
      • 1...Qc8
        • 2.Re2#
      • 1...Se2
        • 2.Rxe2#
      • 1...Qe6!
    • 1.Bb5?
      • threat
        • 2.Re2#
      • 1...Kd4
        • 2.Sc6#
      • 1...Ke4
        • 2.Sf5#
      • 1...Kxf6
        • 2.Rxb3#
      • 1...Se2
        • 2.Rxe2#
      • 1...Qe6!
    • 1.Re6+?
      • 1...Kd4
        • 2.Rd2#
        • 2.Rxb3#
        • 2.Qxh8#
      • 1...Qxe6!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Re2#
      • 1...Kd4
        • 2.Sf5#
      • 1...Ke4
        • 2.Sc6#
      • 1...Kxf6
        • 2.Rxb3#
      • 1...Se2
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT,XR(I)::B(A)+R(B),XP(b)
    • S(a);OGATE,XB(C)::B(A)+R(B),DCHECK,XS(a)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(I)::QAR1(K)
      • Refutation
        • B(d);XQ(K)
    • Try
      • S(J);CHECK
      • Refutation
        • K(e);S_FLIGHT,XR(I)
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::B(A)+R(B),XP(b)
        • K(e);S_FLIGHT,XR(I)::B(A)+R(B),XP(b)
        • Q(c);XP(D)::B(A)+R(B),DCHECK
        • S(a);XB(C)::B(A)+R(B),DCHECK
        • Q(c);::B(A)+R(B),DCHECK
        • S(a);::B(A)+R(B),DCHECK,XS(a)
      • Refutation
        • Q(c);
    • Try
      • B(C);
      • Threat
        • B(A)+R(B),DCHECK
      • Vars
        • K(e);S_FLIGHT::S(J)
        • K(e);P-FLIGHT::QAR(K)+S(J)
        • K(e);S_FLIGHT,XR(I)::B(A)+R(B),XP(b)
        • S(a);::B(A)+R(B),DCHECK,XS(a)
      • Refutation
        • Q(c);
    • Try
      • R(I);CHECK
      • Refutation
        • Q(c);XR(I)
  • Actual
    • B(C);
    • Threat
      • B(A)+R(B),DCHECK
    • Vars
      • K(e);S_FLIGHT::S(J)
      • K(e);P-FLIGHT::QAR(K)+S(J)
      • K(e);S_FLIGHT,XR(I)::B(A)+R(B),XP(b)
      • S(a);::B(A)+R(B),DCHECK,XS(a)
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