MESON Chess Problem Database

Problem Display
PID: 268929 (8/2Q5/r7/3k4/P1R4N/2P5/P2K4/3B4 w - - 0 1)

Koshel, Mikhail Igorevich

Shakhmatnaya kompozitsiya, 2022

8/2Q5/r7/3k4/P1R4N/2P5/P2K4/3B4

#2

8 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Rd4#
      • 2.Qc5#
  • Tries
    • 1.Bg4?
      • threat
        • 2.Rd4#
        • 2.Qc5#
      • 1...Rxa4
        • 2.Qc5#
      • 1...Rd6
        • 2.Qc5#
      • 1...Ra5
        • 2.Rd4#
      • 1...Rc6!
    • 1.Rc5+?
      • 1...Ke4
        • 2.Bc2#
        • 2.Bf3#
        • 2.Qe5#
      • 1...Ke6!
    • 1.Qe5+?
      • 1...Kxc4
        • 2.Be2#
        • 2.Bb3#
        • 2.Qd4#
        • 2.Qb5#
      • 1...Kxe5!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Re4#
      • 1...Rxc6!
    • 1.Qe7?
      • threat
        • 2.Rc5#
      • 1...Kxc4
        • 2.Bb3#
      • 1...Re6
        • 2.Qc5#
      • 1...Rc6
        • 2.Rd4#
      • 1...Rd6
        • 2.Qe4#
      • 1...Ra5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Re5#
      • 1...Kxe4
        • 2.Bf3#
      • 1...Rc6
        • 2.Qe5#
      • 1...Rd6
        • 2.Qc4#
      • 1...Re6
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(E)::QAR1(H)
        • R(b);::QAR1(H)
        • R(b);::R1(F)
      • Refutation
        • R(b);
    • Try
      • R(F);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,S_CUTR(b)::R1(F)
      • Refutation
        • R(b);XQ(H)
    • Try
      • Q(H);
      • Threat
        • R1(F)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XR(F)::B(A)
        • R(b);SBLOCK::QAR1(H)
        • R(b);SBLOCK::R1(F)
        • R(b);SBLOCK::QAB1(H)
      • Refutation
        • R(b);
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(F)::B(A)
      • R(b);SBLOCK::QAR1(H)
      • R(b);SBLOCK::QAB1(H)
      • R(b);SBLOCK::R1(F)
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