MESON Chess Problem Database

Problem Display
PID: 55482 (8/2B2p2/b1P2P2/1pkP3R/1p6/2np1N2/3Np3/Q1n1K2B w - - 0 1)

Zappas, Byron

2nd Prize, BCF 104. Ty., 1963-1964

8/2B2p2/b1P2P2/1pkP3R/1p6/2np1N2/3Np3/Q1n1K2B

#2

10 + 9

3747 FIDE Album (1962-1964) 1968
5406 Selected Chess Compositions by Greek Composers 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Qa7#
    • 1...Bc8
      • 2.Qa7#
    • 1...Sb1
      • 2.Qd4#
    • 1...Sd1
      • 2.Qd4#
    • 1...Sa2
      • 2.Qd4#
    • 1...Sa4
      • 2.Qd4#
    • 1...Se4
      • 2.Qd4#
    • 1...Sxd5
      • 2.Qxc1#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Sb3+?
      • 1...Kc4
        • 2.Sfd2#
      • 1...Sxb3!
    • 1.Se4+?
      • 1...Sxe4
        • 2.Qd4#
      • 1...Kc4!
    • 1.Sd4?
      • 1...Kxd4
        • 2.Bb6#
      • 1...Sxd5
        • 2.Rxd5#
      • 1...b3
        • 2.Qxc3#
      • 1...S1a2
        • 2.S4b3#
      • 1...Bb7
        • 2.Qa7#
      • 1...Bc8
        • 2.Qa7#
      • 1...Sb3
        • 2.S4xb3#
      • 1...Sb1
        • 2.d6#
      • 1...Sd1
        • 2.d6#
      • 1...S3a2
        • 2.d6#
      • 1...Sa4
        • 2.d6#
      • 1...Se4!
    • 1.Qa5?
      • threat
        • 2.Qb6#
      • 1...b3
        • 2.Qxc3#
      • 1...Sa4!
    • 1.Qxa6?
      • threat
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sxd5
        • 2.Qb6#
      • 1...Sa4
        • 2.d6#
      • 1...b3!
    • 1.d6+?
      • 1...Sd5
        • 2.Qxc1#
      • 1...Kxc6!
  • Keys
    • 1.Se5!
      • 1...Kd4
        • 2.Bb6#
      • 1...Sxd5
        • 2.Se4#
      • 1...b3
        • 2.Qxc3#
      • 1...S1a2
        • 2.Sb3#
      • 1...Bb7
        • 2.Qa7#
      • 1...Bc8
        • 2.Qa7#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sb1
        • 2.Sd7#
      • 1...Sd1
        • 2.Sd7#
      • 1...S3a2
        • 2.Sd7#
      • 1...Sa4
        • 2.Sd7#
      • 1...Se4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(h);OGATE::QAB(A)
    • S(c);OGATE::QAB1(A)
    • S(c);OGATEB,P_SPINS(c),XP(F)::QAR(A),XS(a)
    • P(e);N_GUARD::QAR2(A),XS(c)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT::S(E)
      • Refutation
        • S(a);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • S(c);OGATE,XS(D)::QAB1(A)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • S(E);
      • Vars
        • K(g);P_SPINS(c),S_FLIGHT,XS(E)::B(J)
        • S(c);OGATE,P_SPINS(c),XP(F)::R1(G),XS(c)
        • P(e);N_GUARD::QAR2(A),XS(c)
        • S(a);N_GUARD::S(E)
        • B(h);OGATE::QAB(A)
        • S(a);N_GUARD::S(E),XS(a)
        • S(c);N_GUARD::R(G)+P(F)
      • Refutation
        • S(c);
    • Try
      • Q(A);P_PINP(f)
      • Threat
        • QAB1(A)
      • Vars
        • P(e);OGATE::QAR2(A),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(A);XB(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);P_SPINS(c),XP(F)::QAB1(A)
        • S(c);N_GUARD::R(G)+P(F)
      • Refutation
        • P(e);
    • Try
      • P(F);CHECK
      • Vars
        • S(c);P_SPINS(c)::QAR(A),XS(a)
      • Refutation
        • K(g);P-FLIGHT,XP(H)
  • Actual
    • S(E);
    • Vars
      • K(g);P_SPINS(c),S_FLIGHT::B(J)
      • S(c);N_GUARD,SBLOCK,XP(F)::S(D)
      • P(e);N_GUARD::QAR2(A),XS(c)
      • S(a);N_GUARD::S(D)
      • B(h);OGATE::QAB(A)
      • S(a);N_GUARD::S(D),XS(a)
      • S(c);::S(E)
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