MESON Chess Problem Database

Problem Display
PID: 24907 (1bnqn1B1/2P2P1Q/2pk1p1B/P5p1/p1P5/N1P1b3/3N3K/3RR3 w - - 0 1)

Nanning, Frederik Willem

Maas-en Scheldebode, 1928

1bnqn1B1/2P2P1Q/2pk1p1B/P5p1/p1P5/N1P1b3/3N3K/3RR3

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Se4#
    • 1...Kxc7
      • 2.fxe8S#
    • 1...Ke7
      • 2.f8Q#
      • 2.f8B#
    • 1...Bc5
      • 2.cxd8Q#
  • Tries
    • 1.Sb3+?
      • 1...Ke6
        • 2.Rxe3#
        • 2.Qe4#
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Kxc7
        • 2.fxe8S#
      • 1...Ke7
        • 2.Rxe3#
        • 2.Qe4#
        • 2.f8Q#
        • 2.f8B#
      • 1...Bd2
        • 2.cxd8Q#
      • 1...Bd4
        • 2.cxd8Q#
      • 1...Ke5!
    • 1.Se4+?
      • 1...Ke6
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Kxc7
        • 2.fxe8S#
      • 1...Ke7
        • 2.f8Q#
        • 2.f8B#
      • 1...Ke5!
    • 1.fxe8S+?
      • 1...Kc5
        • 2.Se4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Qxe8!
  • Keys
    • 1.c5+!
      • 1...Kxc5
        • 2.Se4#
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke5
        • 2.Qe4#
      • 1...Ke6
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Kxc7
        • 2.fxe8S#
      • 1...Kd7
        • 2.f8S#
      • 1...Ke7
        • 2.f8Q#
        • 2.f8B#
      • 1...Bxc5
        • 2.cxd8Q#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P_PINP(J),S_FLIGHT::S(C)
    • K(e);S_FLIGHT,XP(J)::PXS(j)=S
    • K(e);P_PINP(J),P_SPINB(a),S_FLIGHT::P=Q
    • B(a);SBLOCK::PXQ(i)=Q
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(J)::PXS(j)=S
        • B(a);P_SPINB(a)::PXQ(i)=Q
      • Refutation
        • K(e);P_SPINB(a),S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,P_PINP(J)::PXS(j)=Q
        • K(e);S_FLIGHT,XP(J)::PXS(j)=S
        • K(e);P_PINP(J),S_FLIGHT::P=Q
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • P(K);CHECK,XS(j)
      • Vars
        • K(e);P_PINP(J),S_FLIGHT::S(C)
        • K(e);P_SPINB(a),S_FLIGHT::QAR1(L)
      • Refutation
        • Q(i);XS(K)
  • Actual
    • P(G);CHECK
    • Vars
      • K(e);P_PINP(J),S_FLIGHT,XP(G)::S(C)
      • K(e);P-FLIGHT,P_PINP(J)::QAR2(L)
      • K(e);P_SPINB(a),S_FLIGHT::QAR1(L)
      • K(e);P-FLIGHT,P_PINP(J),P_SPINB(a)::PXS(j)=Q
      • K(e);S_FLIGHT,XP(J)::PXS(j)=S
      • K(e);P-FLIGHT,P_PINP(J)::P=S
      • K(e);P_PINP(J),P_SPINB(a),S_FLIGHT::P=Q
      • B(a);SBLOCK,XP(G)::PXQ(i)=Q
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