MESON Chess Problem Database

Problem Display
PID: 57429 (nr6/Kp1B1b1p/Qp2P3/1PNk1pnR/1R1PN3/2Ppr1P1/6q1/6B1 w - - 0 1)

Kapralos, Demetrius N

Chess Life, 1956

nr6/Kp1B1b1p/Qp2P3/1PNk1pnR/1R1PN3/2Ppr1P1/6q1/6B1

#2

13 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qa2#
    • 1...Qh1
      • 2.Qa2#
    • 1...Qf3
      • 2.Qa2#
    • 1...Qh3
      • 2.Qa2#
    • 1...Qxg1
      • 2.Qa2#
    • 1...Qa2
      • 2.Qxa2#
    • 1...Qxg3
      • 2.Qa2#
    • 1...Re1
      • 2.c4#
    • 1...Re2
      • 2.c4#
    • 1...Rf3
      • 2.c4#
    • 1...Rxg3
      • 2.c4#
    • 1...Rd8
      • 2.Qxb7#
    • 1...Re8
      • 2.Qxb7#
    • 1...Rf8
      • 2.Qxb7#
    • 1...Rg8
      • 2.Qxb7#
    • 1...Rh8
      • 2.Qxb7#
    • 1...Sh3
      • 2.Rxf5#
    • 1...Sxe6
      • 2.Rxf5#
    • 1...d2
      • 2.Qa2#
    • 1...f4
      • 2.Rxg5#
    • 1...bxc5
      • 2.Sf6#
    • 1...bxa6
      • 2.Bc6#
  • Keys
    • 1.Sxb7!
      • threat
        • 2.Sf6#
      • 1...Rxb7+
        • 2.Qxb7#
      • 1...Kxe4
        • 2.Bc6#
      • 1...Qxe4
        • 2.Qa2#
      • 1...Rxe4
        • 2.c4#
      • 1...Sxe4
        • 2.Rxf5#
      • 1...fxe4
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 22
  • Sets
    • Q(a);N_GUARD::QAB(J)
    • Q(a);N_GUARD,XB(A)::QAB(J)
    • Q(a);N_GUARD,P_PINQ(J)::QAB(J),XQ(a)
    • Q(a);N_GUARD,XP(C)::QAB(J)
    • R(c);::P(B)
    • R(c);XP(C)::P(B)
    • R(l);N_GUARD::QAB(J),XP(h)
    • S(f);OGATE,P_SPINP(e)::R(I),XP(e)
    • S(f);OGATE,P_SPINP(e),XP(K)::R(I),XP(e)
    • P(b);S_CUTQ(a)::QAB(J)
    • P(e);OGATEB,P_SPINS(f)::R(I),XS(f)
    • P(g);XS(H)::S(F)
    • P(h);N_GUARD,XQ(J)::B(M)
  • Actual
    • S(H);XP(h)
    • Threat
      • S(F)
    • Vars
      • R(l);CHECK,OGATE,XS(H)::QAB(J),XR(l)
      • K(d);S_FLIGHT,XS(F)::B(M)
      • Q(a);N_GUARD,SBLOCK,XS(F)::QAB(J)
      • R(c);SBLOCK,XS(F)::P(B)
      • S(f);OGATE,P_SPINP(e),SBLOCK,XS(F)::R(I),XP(e)
      • P(e);OGATEB,P_SPINS(f),SBLOCK,XS(F)::R(I),XS(f)
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