MESON Chess Problem Database

Problem Display
PID: 120009 (2nb4/4p3/p7/kp2Q3/NpR5/R3K3/1P6/8 w - - 0 1)

Gavrilov, Constantin Grigorievich

Tidskrift for Schack, 1905

2nb4/4p3/p7/kp2Q3/NpR5/R3K3/1P6/8

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Kb6
        • 2.Qb8#
      • 1...bxa3!
    • 1.Sc5+?
      • 1...Kb6
        • 2.Rxa6#
      • 1...bxa3!
    • 1.Sb6+?
      • 1...Kxb6
        • 2.Qb8#
      • 1...bxa3!
    • 1.Qxb5+?
      • 1...Kxb5
        • 2.Rc5#
      • 1...axb5!
    • 1.Qc5?
      • threat
        • 2.Qxb4#
      • 1...bxa3
        • 2.Qb4#
      • 1...b3
        • 2.Sc3#
        • 2.Sb6#
        • 2.Qb4#
      • 1...Bb6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qxb4#
      • 1...Bb6+
        • 2.Sc5#
      • 1...bxc3
        • 2.b4#
      • 1...bxc4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::QAR2(F)
      • Refutation
        • P(a);XR(B)
    • Try
      • S(D);CHECK,N_PINP(c)
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(B),XP(d)
      • Refutation
        • P(a);XR(B)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT,XS(D)::QAR2(F)
      • Refutation
        • P(a);XR(B)
    • Try
      • Q(F);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT,XQ(F)::R1(E)
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB1(F),XP(a)
      • Vars
        • P(a);XR(B)::QAB1(F)
      • Refutation
        • B(g);P_PINQ(F)
  • Actual
    • Q(F);N_PINP(c),P_PINP(a)
    • Threat
      • QAB1(F),XP(a)
    • Vars
      • B(g);CHECK,SBLOCK::R(B)+S(D)
      • P(a);N_SPINP(a),OGATE,XQ(F)::P(A)
      • P(c);OGATEB,XR(E)::QAR(F)
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