MESON Chess Problem Database

Problem Display
PID: 103881 (1Q6/1b6/2P4p/3P3B/7B/4P2R/NN1k2pp/1Kn2nRq w - - 0 1)

Banny, Dimitry Nikolaevich

Shakhmaty, 1978

1Q6/1b6/2P4p/3P3B/7B/4P2R/NN1k2pp/1Kn2nRq

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qb4#
    • 1...Bxc6
      • 2.Qb4#
    • 1...Ba8
      • 2.Qb4#
    • 1...Bc8
      • 2.Qb4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sxe3
      • 2.Be1#
  • Tries
    • 1.Rxg2+?
      • 1...Se2
        • 2.Rxe2#
      • 1...Qxg2!
    • 1.Qg3?
      • threat
        • 2.Qe1#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sxg3!
    • 1.Qf4?
      • threat
        • 2.Qb4#
      • 1...Sxa2
        • 2.Qd4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sg3
        • 2.e4#
      • 1...Se2!
    • 1.Qe5?
      • threat
        • 2.Qc3#
      • 1...Sxa2
        • 2.Qd4#
      • 1...Se2!
    • 1.Qh8?
      • threat
        • 2.Qc3#
      • 1...Sxa2
        • 2.Qd4#
      • 1...Se2!
  • Keys
    • 1.e4!
      • threat
        • 2.Sc4#
      • 1...Sg3
        • 2.Qf4#
      • 1...Se2
        • 2.Rd3#
      • 1...Ba6
        • 2.Qb4#
      • 1...Se3
        • 2.Be1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(h);OGATE::QAB(K)
    • B(h);OGATE,XP(J)::QAB(K)
    • S(a);SBLOCK::S(D)
    • S(b);XP(E)::B(G)
  • Tries
    • Try
      • R(B);CHECK,XP(e)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(B),XS(a)
      • Refutation
        • Q(c);XR(B)
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • S(a);SBLOCK::S(D)
      • Refutation
        • S(b);XQ(K)
    • Try
      • Q(K);
      • Threat
        • QAB(K)
      • Vars
        • S(a);N_GUARD,XS(C)::QAR2(K)
        • S(a);SBLOCK::S(D)
        • S(b);N_GUARD::QAB(K)+P(E)
      • Refutation
        • S(a);
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • S(a);N_GUARD,XS(C)::QAR2(K)
      • Refutation
        • S(a);
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • S(a);N_GUARD,XS(C)::QAR2(K)
      • Refutation
        • S(a);
  • Actual
    • P(E);
    • Threat
      • S(D)
    • Vars
      • S(b);N_GUARD::QAB(K)
      • S(a);N_GUARD::R1(F)
      • B(h);OGATE::QAB(K)
      • S(b);::B(G)
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