MESON Chess Problem Database

Problem Display
PID: 187596 (r3k3/1R6/rp5B/5N1K/1nN2p2/5Qpn/3b4/3R4 w q - 0 1)

Shanshin, Valery Yurevich

harmonie-aktiv, 2014

r3k3/1R6/rp5B/5N1K/1nN2p2/5Qpn/3b4/3R4

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Re7#
      • 2.Qe4#
    • 1...Bc1
      • 2.Re7#
      • 2.Qe4#
    • 1...Be1
      • 2.Re7#
      • 2.Qe2#
      • 2.Qe4#
    • 1...Bc3
      • 2.Re7#
    • 1...Be3
      • 2.Re7#
      • 2.Qe4#
    • 1...0-0-0
      • 2.Se7#
  • Tries
    • 1.Qe2+?
      • 1...Be3
        • 2.Re7#
      • 1...Kd8!
    • 1.Qg4?
      • threat
        • 2.Qg8#
      • 1...Kd8
        • 2.Qg8#
      • 1...0-0-0
        • 2.Sfd6#
      • 1...Sg5!
    • 1.Qd5?
      • threat
        • 2.Re7#
        • 2.Qg8#
        • 2.Qd7#
      • 1...R6a7
        • 2.Qg8#
        • 2.Qd7#
      • 1...R8a7
        • 2.Rb8#
        • 2.Qg8#
        • 2.Qd7#
      • 1...Rd8
        • 2.Re7#
        • 2.Qe4#
        • 2.Qe6#
        • 2.Qf7#
        • 2.Qg8#
        • 2.Qe5#
      • 1...Sc6
        • 2.Qg8#
        • 2.Qd7#
      • 1...Sxd5!
    • 1.Qc6+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Sxc6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...0-0-0
        • 2.Scd6#
      • 1...Bxc3
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);::R1(G)
    • K(i);0-0-0::S(D)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);P_SPINB(a)::R1(G)
      • Refutation
        • K(i);P-FLIGHT,P_SPINB(a)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(i);P-FLIGHT,P_SPINB(a)::QAR(B)
        • K(i);0-0-0::QAB(B)+S(D),DCHECK
      • Refutation
        • S(c);
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Refutation
        • S(d);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(i);P-FLIGHT,P_SPINB(a)::QAR1(B)
      • Refutation
        • S(d);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(i);P-FLIGHT,P_SPINB(a)::QAR(B)
      • K(i);0-0-0::QAR(B)+S(C),DCHECK
      • B(a);XQ(B)::R1(G)
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