MESON Chess Problem Database

Problem Display
PID: 199822 (B7/8/8/1PRP4/qQ1rkbK1/p1RN2p1/2P5/3N4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Die Schwalbe, 2019

B7/8/8/1PRP4/qQ1rkbK1/p1RN2p1/2P5/3N4

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2
      • 2.d6#
    • 1...Rc4
      • 2.R3xc4#
      • 2.R5xc4#
  • Tries
    • 1.R5c4?
      • threat
        • 2.Rxd4#
      • 1...Qxb4
        • 2.d6#
      • 1...Rxc4
        • 2.Rxc4#
      • 1...Be3
        • 2.Qe7#
      • 1...Be5
        • 2.Sc5#
      • 1...Qa7!
  • Keys
    • 1.R3c4!
      • threat
        • 2.Rxd4#
      • 1...Qxb4
        • 2.d6#
      • 1...Rxc4
        • 2.Rxc4#
      • 1...Be3
        • 2.Sc3#
      • 1...Be5
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD,XP(B)::B(J)+P(I)
  • Tries
    • Try
      • R(H);
      • Threat
        • R1(H),XR(d)
      • Vars
        • Q(c);N_GUARD,XQ(E)::B(J)+P(I)
        • R(d);OGATE,XR(H)::R(C),XR(d)
        • B(f);N_GUARD::QAR(E)
        • B(f);SBLOCK::S(D)
      • Refutation
        • Q(c);
  • Actual
    • R(C);
    • Threat
      • R1(C),XR(d)
    • Vars
      • Q(c);N_GUARD,XQ(E)::B(J)+P(I)
      • R(d);OGATE,XR(C)::R(H),XR(d)
      • B(f);SBLOCK::S(A)
      • B(f);N_GUARD::QAR(E)
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