MESON Chess Problem Database

Problem Display
PID: 207496 (7Q/1Rpqn3/2Nb2R1/2pk1P2/4p3/8/2P2p2/1K3B2 w - - 0 1)

Taylor, I(J)ohn Odin Howard

New York Turf, Field and Farm, 1871

7Q/1Rpqn3/2Nb2R1/2pk1P2/4p3/8/2P2p2/1K3B2

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc6
      • 2.c4#
    • 1...Bh2
      • 2.c4#
    • 1...Bg3
      • 2.c4#
    • 1...Bf4
      • 2.c4#
    • 1...Be5
      • 2.Qxe5#
      • 2.c4#
    • 1...Sxc6
      • 2.c4#
    • 1...e3
      • 2.Qh1#
  • Tries
    • 1.Sxe7+?
      • 1...Bxe7
        • 2.c4#
      • 1...Qxe7!
    • 1.Rb6?
      • threat
        • 2.c4#
      • 1...e3
        • 2.Qh1#
      • 1...c4
        • 2.Qd4#
      • 1...cxb6!
    • 1.Rxc7?
      • threat
        • 2.c4#
      • 1...e3
        • 2.Qh1#
      • 1...c4
        • 2.Qd4#
      • 1...Qxc7!
    • 1.Qe5+?
      • 1...Bxe5
        • 2.c4#
      • 1...Kxc6!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Sb4#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Qxc6
        • 2.c4#
      • 1...Sxc6
        • 2.c4#
      • 1...e3
        • 2.Qh1#
      • 1...Be5
        • 2.Qxe5#
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);SBLOCK,XS(E)::P(C)
    • B(e);::P(C)
    • S(h);SBLOCK,XS(E)::P(C)
    • P(b);OGATEB::QAB(H)
  • Tries
    • Try
      • S(E);CHECK,XS(h)
      • Vars
        • B(e);XS(E)::P(C)
      • Refutation
        • Q(g);XS(E)
    • Try
      • R(G);
      • Threat
        • P(C)
      • Vars
        • P(b);OGATEB::QAB(H)
        • P(c);N_GUARD::QAR1(H)
      • Refutation
        • P(f);XR(G)
    • Try
      • R(G);XP(f)
      • Threat
        • P(C)
      • Vars
        • P(b);OGATEB::QAB(H)
        • P(c);N_GUARD::QAR1(H)
      • Refutation
        • Q(g);XR(G)
    • Try
      • Q(H);CHECK
      • Vars
        • B(e);XQ(H)::P(C)
      • Refutation
        • K(d);P_SPINB(e),S_FLIGHT,XS(E)
  • Actual
    • R(G);P_PINP(c)
    • Threat
      • S(E)
    • Vars
      • K(d);N_SPINP(c),OGATEB,P_SPINB(e),S_FLIGHT,XS(E)::QAB(H)
      • Q(g);SBLOCK,XS(E)::P(C)
      • S(h);SBLOCK,XS(E)::P(C)
      • P(b);OGATEB::QAB(H)
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