MESON Chess Problem Database

Problem Display
PID: 223356 (2B3N1/4B3/2pp4/P2k1p2/R4P2/2K1P1R1/8/8 w - - 0 1)

Kalyanov, K

Vsemirnaya Illustrantiya, 1885

2B3N1/4B3/2pp4/P2k1p2/R4P2/2K1P1R1/8/8

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bh4?
      • 1...c5
        • 2.Se7#
      • 1...Kc5!
    • 1.Bg5?
      • 1...c5
        • 2.Se7#
      • 1...Kc5!
    • 1.Bf6?
      • 1...c5
        • 2.Se7#
      • 1...Kc5!
    • 1.Bd8?
      • 1...c5
        • 2.Se7#
      • 1...Kc5!
    • 1.Bf8?
      • 1...c5
        • 2.Se7#
      • 1...Kc5!
    • 1.Bd7?
      • 1...c5
        • 2.Sf6#
      • 1...Kc5!
    • 1.Rg5?
      • threat
        • 2.Rxf5#
      • 1...Kc5
        • 2.Rxf5#
      • 1...c5!
    • 1.Rg6?
      • 1...c5
        • 2.Bb7#
        • 2.Rxd6#
      • 1...Kc5!
    • 1.e4+?
      • 1...fxe4
        • 2.Rg5#
      • 1...Kc5!
  • Keys
    • 1.Re4!
      • 1...Kxe4
        • 2.Sf6#
      • 1...Kc5
        • 2.Re5#
      • 1...fxe4
        • 2.Rg5#
      • 1...c5
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);
      • Vars
        • P(c);SBLOCK::S(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • P(c);SBLOCK::S(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • P(c);SBLOCK::S(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • P(c);SBLOCK::S(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • P(c);SBLOCK::S(I)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(d)
    • Try
      • B(H);
      • Vars
        • P(c);SBLOCK::S(I)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(d)
    • Try
      • R(C);P_PINP(b)
      • Threat
        • R(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::R(C),XP(b)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(d)
    • Try
      • P(B);CHECK
      • Vars
        • P(b);XP(B)::R(C)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(d)
  • Actual
    • R(D);
    • Vars
      • K(a);S_FLIGHT,XR(D)::S(I)
      • K(a);P-FLIGHT,P_SPINP(d)::R(D)
      • P(b);OGATEB,SBLOCK,XR(D)::R(C)
      • P(c);OGATEB,SBLOCK::B(H)
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