MESON Chess Problem Database

Problem Display
PID: 267577 (1nqrRbKn/1p1kp1N1/1P2N1B1/1P1bP3/6Q1/3P4/3R2p1/5r2 w - - 0 1)

Ceriani, Luigi

Chemnitzer Tageblatt, 1927

(First published on Sun Feb 6 1927)

1nqrRbKn/1p1kp1N1/1P2N1B1/1P1bP3/6Q1/3P4/3R2p1/5r2

#2

11 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Rxd8#
    • 1...Qc2
      • 2.Rxd8#
    • 1...Qc3
      • 2.Rxd8#
    • 1...Qc4
      • 2.Rxd8#
    • 1...Qc5
      • 2.Rxd8#
    • 1...Qc6
      • 2.Rxd8#
    • 1...Rf7
      • 2.Sc5#
      • 2.Sxf8#
    • 1...Bf3
      • 2.Sc5#
      • 2.Sxf8#
    • 1...Bc4
      • 2.dxc4#
    • 1...Be4
      • 2.Sc5#
      • 2.Sxf8#
      • 2.dxe4#
    • 1...Bc6
      • 2.Sc5#
      • 2.Sxf8#
    • 1...Bxe6+
      • 2.Qxe6#
    • 1...Sf7
      • 2.Sc5#
      • 2.Sxf8#
  • Tries
    • 1.Bf7?
      • threat
        • 2.Sc5#
        • 2.Sxf8#
      • 1...Bxe6
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...Bxg7
        • 2.Sc5#
        • 2.Sf8#
      • 1...Qc5
        • 2.Sxc5#
        • 2.Sxf8#
        • 2.Rxd8#
      • 1...Rf5
        • 2.Sxf8#
      • 1...Rxe8!
    • 1.Qd4?
      • threat
        • 2.Qxd5#
      • 1...Qc1
        • 2.Rxd8#
      • 1...Qc2
        • 2.Rxd8#
      • 1...Qc3
        • 2.Rxd8#
      • 1...Qc4
        • 2.Rxd8#
      • 1...Qc5
        • 2.Rxd8#
      • 1...Qc6
        • 2.Rxd8#
      • 1...Sf7
        • 2.Sxf8#
      • 1...Qc7!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxd5#
      • 1...Bxe6+
        • 2.Qxe6#
      • 1...Qxc4
        • 2.Rxd8#
      • 1...Bxc4
        • 2.dxc4#
      • 1...Qc5
        • 2.Rxd8#
      • 1...Qc6
        • 2.Rxd8#
      • 1...Qc7
        • 2.Qxc7#
      • 1...Bf3
        • 2.Sxf8#
      • 1...Be4
        • 2.dxe4#
      • 1...Bc6
        • 2.Sc5#
      • 1...Sf7
        • 2.Sxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD::R1(J),XR(i)
    • B(c);OGATE::R(A)+P(B),XB(c)
    • B(c);CHECK,OGATE,P_SPINB(c),XS(G)::QAB1(C),XB(c)
  • Tries
    • Try
      • B(H);N_SPINS(G)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::S(G),XB(j)
      • Refutation
        • R(i);XR(J)
    • Try
      • Q(C);P_PINB(c)
      • Threat
        • QAR2(C),XB(c)
      • Vars
        • Q(h);N_GUARD::R1(J),XR(i)
        • S(k);N_PINS(G)::S(G),XB(j)
      • Refutation
        • Q(h);
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XB(c)
    • Vars
      • B(c);CHECK,OGATE,XS(G)::QAB1(C),XB(c)
      • Q(h);N_GUARD,XQ(C)::R1(J),XR(i)
      • B(c);OGATE,XQ(C)::R(A)+P(B),XB(c)
      • Q(h);N_GUARD::R1(J),XR(i)
      • Q(h);N_GUARD::QAR1(C),XQ(h)
      • B(c);N_PINS(G)::S(G),XB(j)
      • B(c);N_PINS(G),OGATE::R(A)+P(B),XB(c)
      • B(c);N_PINS(G)::S(G)
      • S(k);N_PINS(G)::S(G),XB(j)
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