MESON Chess Problem Database

Problem Display
PID: 193423 (8/p1N2p2/1bQBp3/pp3p2/b2k4/5P2/3rBPK1/1R1n2N1 w - - 0 1)

Mead, CG

Magyar Sakkvilag, 1914

8/p1N2p2/1bQBp3/pp3p2/b2k4/5P2/3rBPK1/1R1n2N1

#2

9 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Sxb5#
    • 1...Bb3
      • 2.Sxb5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bxc7
      • 2.Qc5#
    • 1...b4
      • 2.Qc4#
    • 1...f6
      • 2.Sxe6#
  • Tries
    • 1.Rxd1?
      • threat
        • 2.Rxd2#
      • 1...Bxd1
        • 2.Sxb5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Bc2
        • 2.Sxb5#
      • 1...Rxd1!
    • 1.Qxb6+?
      • 1...Kc3
        • 2.Qc5#
      • 1...axb6!
  • Keys
    • 1.Rb3!
      • 1...Se3+
        • 2.fxe3#
      • 1...Rxe2
        • 2.Sxe2#
      • 1...Bxb3
        • 2.Sxb5#
      • 1...Bxc7
        • 2.Qc5#
      • 1...Sxf2
        • 2.Qc3#
      • 1...Ra2
        • 2.Rd3#
      • 1...Rb2
        • 2.Rd3#
      • 1...Rc2
        • 2.Rd3#
      • 1...Rd3
        • 2.Rxd3#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...b4
        • 2.Qc4#
      • 1...f4
        • 2.Qe4#
      • 1...e5
        • 2.Qd5#
      • 1...a6
        • 2.Qxb6#
      • 1...f6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::S(I),XP(f)
    • B(h);N_GUARD::QAB1(G),XB(h)
    • B(h);N_GUARD,XS(I)::QAB1(G)
    • P(f);N_GUARD::QAR1(G)
    • P(k);N_GUARD::S(I),XP(i)
  • Tries
    • Try
      • R(A);P_PINR(b),XS(a)
      • Threat
        • R(A),XR(b)
      • Vars
        • B(c);N_GUARD,N_SPINR(b),XR(A)::S(I),XP(f)
        • B(h);N_GUARD::QAB1(G),XB(h)
        • R(b);OGATE::R1(A),XR(b)
        • B(c);N_GUARD::S(I),XP(f)
      • Refutation
        • R(b);N_SPINR(b),XR(A)
    • Try
      • Q(G);CHECK,XB(h)
      • Vars
        • K(d);S_FLIGHT::QAR2(G)
      • Refutation
        • P(j);XQ(G)
  • Actual
    • R(A);
    • Vars
      • S(a);CHECK,OGATE::P(D),XS(a)
      • R(b);P_PINP(D),XB(C)::S(B),XR(b)
      • B(c);N_GUARD,XR(A)::S(I),XP(f)
      • B(h);N_GUARD,XS(I)::QAB1(G)
      • S(a);N_GUARD,XP(D)::QAB1(G)
      • R(b);N_GUARD::R1(A)
      • R(b);N_GUARD::R1(A),XR(b)
      • B(h);N_GUARD::QAB1(G),XB(h)
      • S(a);N_GUARD::QAB1(G)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • P(f);N_GUARD::QAR1(G)
      • P(g);N_GUARD::QAR1(G)
      • P(i);N_GUARD::QAR1(G)
      • P(j);N_GUARD::QAB(G),XB(h)
      • P(k);N_GUARD::S(I),XP(i)
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