MESON Chess Problem Database

Problem Display
PID: 275407 (2N1RQ2/8/1K2P1r1/4k3/1p6/1Bb1pP2/1BN5/2R5 w - - 0 1)

Birchmeier, Oskar

Die Tat, 1964

(First published on Fri Oct 30 1964)

2N1RQ2/8/1K2P1r1/4k3/1p6/1Bb1pP2/1BN5/2R5

#2

10 + 5

6490 yacpdb 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6+
      • 2.Rxe6#
    • 1...Bd4+
      • 2.Bxd4#
  • Tries
    • 1.Sxb4?
      • threat
        • 2.Sc6#
        • 2.Bxc3#
      • 1...Rxe6+
        • 2.Sc6#
      • 1...Bd4+
        • 2.Rc5#
      • 1...Kd4
        • 2.Bxc3#
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qf4#
      • 1...Bxb2
        • 2.Sc6#
      • 1...Rg4
        • 2.Sc6#
      • 1...Rf6!
    • 1.Sa7?
      • threat
        • 2.Sc6#
      • 1...Bd4+
        • 2.Bxd4#
      • 1...Rf6!
    • 1.Ra1?
      • threat
        • 2.Ra5#
      • 1...Rxe6+
        • 2.Rxe6#
      • 1...Bd4+
        • 2.Bxd4#
      • 1...Rf6!
    • 1.Rd1?
      • threat
        • 2.Rd5#
      • 1...Rxe6+
        • 2.Rxe6#
      • 1...Bd4+
        • 2.Bxd4#
      • 1...Rf6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Bxd4+
        • 2.Rc5#
      • 1...Kxd4
        • 2.Qd6#
      • 1...Rf6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XP(G)::R1(I),XR(e)
    • B(a);CHECK,OGATE::B(B),XB(a)
  • Tries
    • Try
      • S(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);CHECK,P_SPINR(e),XP(G)::S(C)
        • B(a);CHECK,OGATE::R(A)
        • B(a);N_SPINB(a),XB(B)::S(C)
        • R(e);N_PINP(G)::S(C)
      • Refutation
        • R(e);
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • B(a);CHECK,OGATE::B(B),XB(a)
      • Refutation
        • R(e);
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • R(e);CHECK,OGATE,P_SPINR(e),XP(G)::R1(I),XR(e)
        • B(a);CHECK,OGATE::B(B),XB(a)
      • Refutation
        • R(e);
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • R(e);CHECK,OGATE,P_SPINR(e),XP(G)::R1(I),XR(e)
        • B(a);CHECK,OGATE::B(B),XB(a)
      • Refutation
        • R(e);
  • Actual
    • S(C);N_PINB(a)
    • Threat
      • S(C)
    • Vars
      • B(a);CHECK,OGATE,P_SPINB(a),XS(C)::R(A)
      • K(d);N_GUARD,P_SPINB(a),S_FLIGHT,XS(C)::QAR2(J)
      • R(e);SBLOCK::QAB1(J)
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