MESON Chess Problem Database

Problem Display
PID: 114835 (1n1r1b2/3n4/1p2p1p1/2p2krp/q1P3b1/4PN2/1BNp1R1P/1B1K3Q w - - 0 1)

Andrade, Barry Jack da Costa

Chess Amateur (The), 1925

1n1r1b2/3n4/1p2p1p1/2p2krp/q1P3b1/4PN2/1BNp1R1P/1B1K3Q

#2

10 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2+
      • 2.Bxc2#
    • 1...Qb5
      • 2.Sa1#
      • 2.Se1#
      • 2.Sa3#
      • 2.Sb4#
    • 1...Qa1
      • 2.Sxa1#
    • 1...Qa3
      • 2.Sxa3#
    • 1...Qb4
      • 2.Sa1#
      • 2.Se1#
      • 2.Sa3#
      • 2.Sxb4#
    • 1...Qa5
      • 2.Sa1#
      • 2.Se1#
      • 2.Sa3#
      • 2.Sb4#
    • 1...Qa6
      • 2.Sa1#
      • 2.Se1#
      • 2.Sa3#
      • 2.Sb4#
    • 1...Qa7
      • 2.Sa1#
      • 2.Se1#
      • 2.Sa3#
      • 2.Sb4#
    • 1...Bxf3+
      • 2.Qxf3#
    • 1...Bh3
      • 2.Se5#
  • Keys
    • 1.Kxd2!
      • threat
        • 2.Sh4#
      • 1...Qxc2+
        • 2.Bxc2#
      • 1...Qb4+
        • 2.Sxb4#
      • 1...Qa5+
        • 2.Sb4#
      • 1...Se5+
        • 2.Sfd4#
      • 1...Sf6+
        • 2.Scd4#
      • 1...Ke4
        • 2.Sxg5#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Bh3
        • 2.Se5#
      • 1...e5
        • 2.Sfd4#
      • 1...h4
        • 2.Sxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(b);CHECK,OGATE,P_PINS(I),P_SPINQ(b),XS(E)::B(A),XQ(b)
    • Q(b);N_PINS(E),P_PINB(A),P_PINS(I)::B(A)+S(E),XQ(b)
    • Q(b);N_PINS(E),P_PINS(I)::B(A)+S(E),XQ(b)
    • B(c);CHECK,OGATE,P_SPINB(c),XS(I)::QAR2(C),XB(c)
    • B(c);::R(F)+S(I)
  • Actual
    • K(B);N_SPINS(E),P-FLIGHT,XP(a)
    • Threat
      • R(F)+S(I),DCHECK
    • Vars
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(E)::B(A),XQ(b)
      • Q(b);CHECK,N_GUARD::B(A)+S(E),XQ(b)
      • Q(b);CHECK,N_GUARD::B(A)+S(E)
      • S(k);CHECK,SBLOCK::R(F)+S(I),DCHECK
      • S(k);CHECK,SBLOCK::B(A)+S(E),DCHECK
      • K(e);S_FLIGHT::QAB(C)+S(I),DCHECK,XR(f)
      • B(c);OGATE,P_SPINB(c),XS(I)::QAR2(C),XB(c)
      • B(c);N_GUARD::R(F)+S(I)
      • P(i);SBLOCK::R(F)+S(I),DCHECK
      • P(g);::R(F)+S(I),DCHECK,XP(g)
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