MESON Chess Problem Database

Problem Display
PID: 170477 (5NK1/8/5k2/4b3/3R4/2Q5/8/2B5 w - - 0 1)

Winterer, Karl

Basler Nachrichten, 1954

5NK1/8/5k2/4b3/3R4/2Q5/8/2B5

#2

5 + 2

6490 yacpdb 2018
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rd6+?
      • 1...Ke7
        • 2.Qxe5#
      • 1...Kf5!
    • 1.Qb3?
      • threat
        • 2.Qe6#
        • 2.Qf7#
      • 1...Kf5
        • 2.Qe6#
      • 1...Ke7
        • 2.Qe6#
        • 2.Qf7#
      • 1...Bxd4
        • 2.Qe6#
      • 1...Bh2
        • 2.Qe6#
      • 1...Bg3
        • 2.Qe6#
      • 1...Bd6
        • 2.Qe6#
      • 1...Bc7
        • 2.Qe6#
      • 1...Bb8
        • 2.Qe6#
      • 1...Bf4!
    • 1.Qe3?
      • threat
        • 2.Qg5#
      • 1...Kf5
        • 2.Qg5#
      • 1...Ke7
        • 2.Qxe5#
      • 1...Bf4!
    • 1.Qf3+?
      • 1...Ke7
        • 2.Qf7#
      • 1...Bf4!
    • 1.Qh3?
      • threat
        • 2.Qe6#
      • 1...Ke7
        • 2.Qe6#
      • 1...Bf4!
    • 1.Qc4?
      • threat
        • 2.Qe6#
        • 2.Qf7#
      • 1...Kf5
        • 2.Qe6#
      • 1...Ke7
        • 2.Qe6#
        • 2.Qf7#
      • 1...Bxd4
        • 2.Qe6#
      • 1...Bh2
        • 2.Qe6#
      • 1...Bg3
        • 2.Qe6#
      • 1...Bd6
        • 2.Qe6#
      • 1...Bc7
        • 2.Qe6#
      • 1...Bb8
        • 2.Qe6#
      • 1...Bf4!
    • 1.Qc5?
      • 1...Bxd4
        • 2.Bg5#
        • 2.Qg5#
      • 1...Bf4
        • 2.Rxf4#
      • 1...Bh2
        • 2.Bg5#
        • 2.Qg5#
      • 1...Bg3
        • 2.Bg5#
        • 2.Qg5#
      • 1...Bd6
        • 2.Bg5#
        • 2.Qg5#
      • 1...Bc7
        • 2.Bg5#
        • 2.Qg5#
      • 1...Bb8
        • 2.Bg5#
        • 2.Qg5#
      • 1...Kf5!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Qe6#
        • 2.Qg6#
      • 1...Ke7
        • 2.Sg6#
        • 2.Qe6#
      • 1...Bd6!
    • 1.Qc8?
      • threat
        • 2.Qe6#
      • 1...Ke7
        • 2.Qe6#
        • 2.Qd8#
      • 1...Bf4!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qxe5#
      • 1...Kf5
        • 2.Qf3#
      • 1...Ke7
        • 2.Qxe5#
      • 1...Bxc3
        • 2.Bg5#
      • 1...Bd4
        • 2.Bg5#

This anticipates 66378(1989)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK,P_PINB(a)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • K(b);N_SPINB(a),P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • B(a);XR(C)::QAR1(B)
        • B(a);::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);P_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • B(a);XR(C)::QAR1(B)
        • B(a);::QAR1(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Vars
        • B(a);N_GUARD::R(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(a)
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Refutation
        • B(a);
  • Actual
    • R(C);P_PINB(a)
    • Threat
      • QAB1(B),XB(a)
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • K(b);N_SPINB(a),S_FLIGHT::QAR2(B),XB(a)
      • B(a);N_SPINB(a),XQ(B)::B(A)
      • B(a);::B(A)
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