MESON Chess Problem Database

Problem Display
PID: 86620 (2BN3K/b5p1/5nkp/7p/6bB/3R4/2R5/1Q6 w - - 0 1)

Gavriliv, Evgeni M

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Canadian Chess Chat, 1981

2BN3K/b5p1/5nkp/7p/6bB/3R4/2R5/1Q6

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rg2?
      • threat
        • 2.Rd6#
      • 1...Sd5
        • 2.Rd1#
        • 2.Rdd2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Re3#
        • 2.Rf3#
        • 2.Rdg3#
        • 2.Rh3#
        • 2.Rd4#
        • 2.Rxd5#
      • 1...Bd4!
    • 1.Rc6?
      • threat
        • 2.Rg3#
      • 1...Bf3
        • 2.Rxf3#
      • 1...Be3!
    • 1.Rd6?
      • threat
        • 2.Rg2#
      • 1...Be2
        • 2.Rxe2#
      • 1...Bf2!
    • 1.Rd7?
      • threat
        • 2.Rxg7#
      • 1...Bxd7
        • 2.Rg2#
      • 1...Sxd7
        • 2.Rg2#
        • 2.Rc6#
      • 1...Be6
        • 2.Rg2#
      • 1...Se8
        • 2.Rg2#
        • 2.Rc6#
      • 1...Kf5!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rxg7#
      • 1...Bxc8
        • 2.Rg3#
      • 1...Be6
        • 2.Rg3#
      • 1...Bd7
        • 2.Rg3#
      • 1...Sd7
        • 2.Rg3#
        • 2.Rd6#
      • 1...Se8
        • 2.Rg3#
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);P_PINB(a)
      • Threat
        • QAB(A)+R(C)
      • Refutation
        • B(f);
    • Try
      • R(B);P_PINS(c)
      • Threat
        • QAB(A)+R(C)
      • Vars
        • B(a);N_GUARD::QAB(A)+R(C),XB(a)
      • Refutation
        • B(f);
    • Try
      • R(C);P_PINS(c)
      • Threat
        • QAB(A)+R(B)
      • Vars
        • B(a);N_GUARD::QAB(A)+R(B),XB(a)
      • Refutation
        • B(f);
    • Try
      • R(C);
      • Threat
        • R1(C),XP(g)
      • Vars
        • B(a);XR(C)::QAB(A)+R(B),DCHECK
        • B(a);::QAB(A)+R(B),DCHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(B);
    • Threat
      • R1(B),XP(g)
    • Vars
      • B(a);XB(E)::QAB(A)+R(C),DCHECK
      • B(a);::QAB(A)+R(C),DCHECK
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