MESON Chess Problem Database

Problem Display
PID: 256566 (qN2N3/r3pp2/8/Q2bkP2/6P1/pB1PPP2/r1R4p/b6K w - - 0 1)

Gockel, Hubert

Die Schwalbe, 2021

qN2N3/r3pp2/8/Q2bkP2/6P1/pB1PPP2/r1R4p/b6K

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qxb8
      • 2.Qxd5#
    • 1...Rb2
      • 2.Qc3#
      • 2.d4#
    • 1...Rxa5
      • 2.Sd7#
    • 1...Ra6
      • 2.Sd7#
    • 1...Rb7
      • 2.Sc6#
      • 2.Qxd5#
    • 1...Rc7
      • 2.Qxc7#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Bc3
      • 2.Qxc3#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.f4#
      • 1...Qxd5
        • 2.Sc6#
      • 1...Rxa5!
    • 1.Rb2?
      • threat
        • 2.Qc3#
        • 2.d4#
      • 1...Rxa5
        • 2.Sd7#
        • 2.d4#
      • 1...Qc6
        • 2.Sxc6#
        • 2.d4#
      • 1...Rc7
        • 2.Qxc7#
        • 2.d4#
      • 1...Bxb2!
    • 1.Rc3?
      • threat
        • 2.d4#
      • 1...Bxc3
        • 2.Qxc3#
      • 1...Rd2!
    • 1.Rc4?
      • threat
        • 2.Re4#
      • 1...Rxa5
        • 2.Sd7#
      • 1...Bd4!
    • 1.Rc6?
      • threat
        • 2.Qxd5#
      • 1...Qxc6
        • 2.Sxc6#
      • 1...Rxa5
        • 2.Sd7#
      • 1...Rd7
        • 2.Sxd7#
      • 1...e6!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Sd7#
      • 1...Qxb8
        • 2.Qxd5#
      • 1...Rxc7
        • 2.Qxc7#
      • 1...Qc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(j);N_GUARD::S(J),XQ(j)
    • Q(j);N_GUARD,XS(J)::QAR1(H),XB(e)
    • R(g);N_GUARD,N_SPINB(e),XQ(H)::S(J)
    • R(g);N_GUARD::S(J)
    • R(g);N_GUARD::QAB(H),XR(g)
    • R(g);N_GUARD::S(J),XR(g)
    • B(a);N_GUARD::QAB(H),XB(a)
  • Tries
    • Try
      • B(C);N_SPINP(F),XB(e)
      • Threat
        • P(F)
      • Vars
        • Q(j);N_GUARD,P_PINP(F),P_SPINQ(j),XB(C)::S(J)
      • Refutation
        • R(g);XQ(H)
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);XR(B)
    • Try
      • R(B);
      • Threat
        • P(D)
      • Vars
        • B(a);OGATE,XR(B)::QAB(H),XB(a)
      • Refutation
        • R(b);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • R(g);N_GUARD,N_SPINB(e),XQ(H)::S(J)
      • Refutation
        • B(a);
    • Try
      • R(B);
      • Threat
        • QAR1(H),XB(e)
      • Vars
        • Q(j);XR(B)::S(J),XQ(j)
        • R(g);N_GUARD,N_SPINB(e),XQ(H)::S(J)
        • R(g);N_GUARD::S(J),XR(g)
      • Refutation
        • P(h);
  • Actual
    • R(B);
    • Threat
      • S(J)
    • Vars
      • Q(j);N_GUARD,XS(J)::QAR1(H),XB(e)
      • R(g);OGATE,XR(B)::QAB(H),XR(g)
      • Q(j);N_GUARD::S(J),XQ(j)
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