MESON Chess Problem Database

Problem Display
PID: 203822 (2nK4/Q5p1/1n1pp3/1pP4R/1R1BkN2/2r1Pp2/r7/5B2 w - - 0 1)

Sapieha, JA

The Problemist, 1954

2nK4/Q5p1/1n1pp3/1pP4R/1R1BkN2/2r1Pp2/r7/5B2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Bd3#
    • 1...Rc2
      • 2.Bd3#
    • 1...Rd3
      • 2.Bxd3#
    • 1...Rc4
      • 2.Bd3#
    • 1...Rxc5
      • 2.Bd3#
    • 1...f2
      • 2.Bg2#
    • 1...dxc5
      • 2.Re5#
    • 1...d5
      • 2.Re5#
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Qb7+?
      • 1...d5
        • 2.Re5#
      • 1...Sd5!
    • 1.Qf7?
      • threat
        • 2.Qxe6#
        • 2.Qg6#
      • 1...Rxc5
        • 2.Bd3#
      • 1...f2
        • 2.Bg2#
      • 1...Rg2
        • 2.Qxe6#
      • 1...Sc4
        • 2.Qg6#
      • 1...Sd7
        • 2.Qg6#
      • 1...Se7
        • 2.Qxe6#
      • 1...e5
        • 2.Qg6#
        • 2.Qf5#
      • 1...g6
        • 2.Qxe6#
        • 2.Qxg6#
      • 1...Rxe3!
  • Keys
    • 1.cxd6!
      • threat
        • 2.Re5#
      • 1...Rxe3
        • 2.Bxb6#
      • 1...f2
        • 2.Bg2#
      • 1...g5
        • 2.Qh7#
      • 1...Rc5
        • 2.Bd3#
      • 1...Sc4
        • 2.Qb7#
      • 1...Sd7
        • 2.Bxc3#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::B(A)
    • R(b);N_GUARD::B(A),XR(b)
    • R(b);N_GUARD,XP(F)::B(A)
    • P(c);OGATEB::B(A)
    • P(g);N_GUARD,XP(F)::R1(G)
    • P(g);N_GUARD::R1(G)
    • P(i);OGATE::QAB(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • P(g);P_SPINP(g)::R1(G)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,XP(F)::B(A)
        • P(c);OGATEB::B(A)
        • R(a);::QAR2(H),XP(h)
        • S(f);::QAB(H)
        • S(j);::QAR2(H),XP(h)
      • Refutation
        • R(b);XP(B)
  • Actual
    • P(F);XP(g)
    • Threat
      • R1(G)
    • Vars
      • R(b);N_GUARD,XP(B)::R(C)+B(D),XS(f)
      • P(c);OGATEB::B(A)
      • P(i);OGATE::QAB(H)
      • R(b);N_GUARD::B(A)
      • S(f);N_GUARD,S_CUTR(b)::QAB(H)
      • S(f);N_GUARD::R(C)+B(D),XR(b)
      • P(h);::R1(G),XP(h)
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